The ENVI image files are accompanied by an ASCII header file (.hdr format) containing the metadata of the image, such as number of samples (rows), lines (columns), number of spectral bands, wavelength, byte order, data type, gain values (if available), irradiance (if available), coordinates etc. This file is necessary to properly read the image data.
read_hdr_envi(path, hFOV = NULL, vFOV = NULL, height = NULL)
| path | A character giving the path for the header file (.hdr). |
|---|---|
| hFOV | (Optional, numeric) The horizontal Field Of View (in degrees) of the sensor. Note: this is used to calculate the spatial extent. See Details. |
| vFOV | (Optional, numeric) The vertical Field Of View (in degrees) of the sensor. Note: this is used to calculate the spatial extent. See Details. |
| height | (Optional, numeric) The flight altitude (in meters). Note: this is be used to calculate the spatial extent. See Details. |
A list of the following:
An integer vector with the dimensions of the image: number of columns (x), rows (y) and layers (spectral bands).
A numeric vector of the wavelength registered, the same length as the number of layers (spectral bands).
A numeric vector of gain values of each spectral band.
A numeric vector of the solar irradiance values registered by the corresponding sensor at each spectral band. Please check the unit (usually W/(m^2 µm sr)) with the manufacturer specifications.
A numeric matrix with the geographic coordinates (xy) registered by the sensor at each spectral band.
A four-column numeric matrix with the spatial extents
(xmin, xmax, ymin, ymax), in UTM, of each spectral band. This is
NULL if the optional arguments are not passed.
The Coordinate Reference System of the spatial extents.
This is NULL if the optional arguments are not passed.
The geographical coordinates (xy) registered in the header file
are automatically retrieved. Please be aware that read_hdr_envi
uses the string "gps" to search this field in the header file. If necessary,
rename this field in the header file.
If the arguments hFOV, vFOV and
height are passed, read_hdr_envi will automatically compute
the UTM zone and the spatial extent, and set up the coordinate reference
system.
# Example 1 path_hdr <- system.file('exdata', 'obory.hdr', package = 'hyperbrick') readLines(path_hdr) #> [1] "ENVI" #> [2] "description = package hyperbrick" #> [3] "wavelength units = nm" #> [4] "samples = 128" #> [5] "lines = 128" #> [6] "file type = ENVI" #> [7] "interleave = BSQ" #> [8] "byte order = 0" #> [9] "data type = 3" #> [10] "bands = 81" #> [11] "acquisition mode = 12" #> [12] "acquisition time = 2025-11-14T23:10:19.283359000+02:00" #> [13] "wavelength = {500.0,505.0,510.0,515.0,520.0,525.0,530.0,535.0,540.0,545.0,550.0,555.0,560.0,565.0,570.0,575.0,580.0,585.0,590.0,595.0,600.0,605.0,610.0,615.0,620.0,625.0,630.0,635.0,640.0,645.0,650.0,655.0,660.0,665.0,670.0,675.0,680.0,685.0,690.0,695.0,700.0,705.0,710.0,715.0,720.0,725.0,730.0,735.0,740.0,745.0,750.0,755.0,760.0,765.0,770.0,775.0,780.0,785.0,790.0,795.0,800.0,805.0,810.0,815.0,820.0,825.0,830.0,835.0,840.0,845.0,850.0,855.0,860.0,865.0,870.0,875.0,880.0,885.0,890.0,895.0,900.0}" #> [14] "fwhm = {0.0,0.0,8.0,8.0,9.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,7.0,7.0,7.0,7.0,7.0,7.0,7.0,9.0,9.0,9.0,9.0,8.0,10.0,8.0,11.0,8.0,8.0,9.0,8.0,8.0,9.0,8.0,8.0,8.0,8.0,6.0,6.0,6.0,6.0,6.0,6.0,6.0,6.0,6.0,6.0,6.0,6.0,6.0,6.0,6.0,7.0,7.0,7.0,7.0,7.0,7.0,7.0,7.0,7.0,11.0,11.0,11.0,11.0,11.0,11.0,11.0,11.0,10.0,10.0,10.0,10.0,10.0,10.0,10.0,10.0,10.0}" #> [15] "data gain values = {0.000000,0.000000,0.001086,0.001104,0.001147,0.001175,0.001160,0.001120,0.001137,0.001155,0.001152,0.001147,0.001168,0.001207,0.001238,0.001248,0.001248,0.001277,0.001338,0.001372,0.001362,0.001349,0.001097,0.001131,0.001182,0.001253,0.001413,0.001726,0.001977,0.002439,0.001997,0.001656,0.001605,0.001633,0.001698,0.001758,0.001776,0.001768,0.001740,0.001717,0.002088,0.002225,0.002339,0.002429,0.002459,0.002431,0.002388,0.002362,0.002390,0.002473,0.002576,0.002645,0.002670,0.002656,0.002618,0.002066,0.002090,0.002145,0.002222,0.002324,0.002426,0.002511,0.002572,0.002586,0.001856,0.001868,0.001911,0.001993,0.002105,0.002230,0.002338,0.002419,0.002478,0.002522,0.002564,0.002600,0.002653,0.002728,0.002836,0.002964,0.003128}" #> [16] "solar irradiance = {175.990097,175.990097,174.207916,174.207916,174.207916,174.801971,174.801971,174.801971,174.801971,174.801971,174.801971,174.801971,174.603958,174.603958,174.603958,174.603958,174.603958,174.603958,174.603958,174.603958,174.554443,174.554443,174.702957,174.702957,174.702957,174.702957,174.702957,174.702957,174.702957,174.702957,174.207916,174.207916,174.207916,174.207916,174.207916,174.207916,174.207916,174.207916,174.801971,174.801971,174.851471,174.851471,174.851471,174.851471,174.851471,174.851471,174.851471,174.851471,175.544540,175.544540,175.544540,175.544540,175.544540,175.544540,175.544540,174.603958,174.603958,174.554443,174.554443,174.554443,174.554443,174.554443,174.554443,174.554443,174.851471,174.851471,174.851471,174.851471,174.851471,174.851471,175.049500,175.049500,175.049500,175.049500,175.049500,175.049500,175.049500,175.049500,175.049500,175.049500,174.702957}" #> [17] "geo points = {1.0000,1.0000,nan,nan}" #> [18] "sequence order = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80}" #> [19] "order = {0,0,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}" #> [20] "timestamp = {0,9151000,893626000,920351000,946659000,987048000,1014019000,1040990000,1054476000,1067961000,1081446000,1094932000,1108417000,1121903000,1135388000,1148874000,1162359000,1175844000,1202815000,1229786000,1256757000,1297213000,734110000,760419000,773572000,786935000,800297000,813660000,827021000,840385000,853538000,866902000,880263000,893626000,906988000,933505000,960078000,973563000,1000534000,1027505000,1392310000,1405466000,1418827000,1432190000,1445551000,1458915000,1472276000,1485640000,1499001000,1512364000,1525726000,1539089000,1552451000,1565814000,1579175000,1189330000,1216301000,1243272000,1270243000,1283728000,1310699000,1324184000,1337670000,1351155000,520520000,533674000,547037000,560399000,573762000,587123000,600487000,613848000,627211000,640573000,653936000,667297000,680660000,694022000,707385000,720747000,747264000}" #> [21] "frame counter = {14256,14257,14287,14289,14291,14294,14296,14298,14299,14300,14301,14302,14303,14304,14305,14306,14307,14308,14310,14312,14314,14317,14274,14276,14277,14278,14279,14280,14281,14282,14283,14284,14285,14286,14288,14290,14292,14293,14295,14297,14322,14323,14324,14325,14326,14327,14328,14329,14330,14331,14332,14333,14334,14335,14336,14309,14311,14313,14315,14316,14318,14319,14320,14321,14258,14259,14260,14261,14262,14263,14264,14265,14266,14267,14268,14269,14270,14271,14272,14273,14275}" #> [22] "integration time = {8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0,8.0}" #> [23] "gps = {\"$GNRMC,111154,A,5204.5354,N,02111.1317,E,0.7529,339.131,291021,,*25\",\"$GNRMC,111154,A,5204.5354,N,02111.1317,E,0.7529,339.131,291021,,*25\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111154,A,5204.5354,N,02111.1317,E,0.7529,339.131,291021,,*25\",\"$GNRMC,111154,A,5204.5354,N,02111.1317,E,0.7529,339.131,291021,,*25\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\",\"$GNRMC,111158,A,5204.5354,N,02111.1317,E,0.0451,40.385,291021,,*10\"}" #> [24] "acceleration = {\"0.154882,1.039324,-9.566206\",\"0.154882,1.039324,-9.566206\",\"-0.677534,-1.455532,-9.306076\",\"0.455078,3.305146,-9.096776\",\"0.455078,3.305146,-9.096776\",\"-0.913744,-0.420394,-9.022026\",\"-0.913744,-0.420394,-9.022026\",\"-0.913744,-0.420394,-9.022026\",\"-0.913744,-0.420394,-9.022026\",\"-0.273286,0.576472,-9.485476\",\"-0.273286,0.576472,-9.485476\",\"-0.273286,0.576472,-9.485476\",\"-0.273286,0.576472,-9.485476\",\"-0.273286,0.576472,-9.485476\",\"-0.273286,0.576472,-9.485476\",\"1.219322,2.292732,-10.122944\",\"1.219322,2.292732,-10.122944\",\"1.219322,2.292732,-10.122944\",\"1.219322,2.292732,-10.122944\",\"0.160862,0.669760,-9.301890\",\"0.160862,0.669760,-9.301890\",\"0.160862,0.669760,-9.301890\",\"-0.084318,-0.226642,-9.795838\",\"2.686216,5.575154,-10.353174\",\"2.686216,5.575154,-10.353174\",\"2.686216,5.575154,-10.353174\",\"2.686216,5.575154,-10.353174\",\"2.686216,5.575154,-10.353174\",\"2.686216,5.575154,-10.353174\",\"-0.677534,-1.455532,-9.306076\",\"-0.677534,-1.455532,-9.306076\",\"-0.677534,-1.455532,-9.306076\",\"-0.677534,-1.455532,-9.306076\",\"-0.677534,-1.455532,-9.306076\",\"-0.677534,-1.455532,-9.306076\",\"0.455078,3.305146,-9.096776\",\"0.455078,3.305146,-9.096776\",\"0.455078,3.305146,-9.096776\",\"-0.913744,-0.420394,-9.022026\",\"-0.913744,-0.420394,-9.022026\",\"-1.079390,-1.016002,-9.765340\",\"0.831220,1.953068,-10.296962\",\"0.831220,1.953068,-10.296962\",\"0.831220,1.953068,-10.296962\",\"0.831220,1.953068,-10.296962\",\"-0.939458,-0.458068,-10.042214\",\"-0.939458,-0.458068,-10.042214\",\"-0.939458,-0.458068,-10.042214\",\"-0.939458,-0.458068,-10.042214\",\"-0.939458,-0.458068,-10.042214\",\"-0.939458,-0.458068,-10.042214\",\"-1.040520,-1.313208,-10.254504\",\"-1.040520,-1.313208,-10.254504\",\"-1.040520,-1.313208,-10.254504\",\"-1.040520,-1.313208,-10.254504\",\"1.219322,2.292732,-10.122944\",\"1.219322,2.292732,-10.122944\",\"0.160862,0.669760,-9.301890\",\"0.160862,0.669760,-9.301890\",\"0.160862,0.669760,-9.301890\",\"-1.079390,-1.016002,-9.765340\",\"-1.079390,-1.016002,-9.765340\",\"-1.079390,-1.016002,-9.765340\",\"-1.079390,-1.016002,-9.765340\",\"0.507104,2.054130,-9.428068\",\"0.507104,2.054130,-9.428068\",\"0.998660,2.834520,-10.378290\",\"0.998660,2.834520,-10.378290\",\"0.998660,2.834520,-10.378290\",\"0.998660,2.834520,-10.378290\",\"0.817466,1.422044,-10.411180\",\"0.817466,1.422044,-10.411180\",\"0.817466,1.422044,-10.411180\",\"0.817466,1.422044,-10.411180\",\"0.817466,1.422044,-10.411180\",\"0.817466,1.422044,-10.411180\",\"-0.084318,-0.226642,-9.795838\",\"-0.084318,-0.226642,-9.795838\",\"-0.084318,-0.226642,-9.795838\",\"-0.084318,-0.226642,-9.795838\",\"-0.084318,-0.226642,-9.795838\"}" #> [25] "gyroscope = {\"0.019584,-0.049572,0.059670\",\"0.019584,-0.049572,0.059670\",\"0.019737,-0.058752,0.052938\",\"0.016983,-0.057528,0.042687\",\"0.016983,-0.057528,0.042687\",\"0.017748,-0.047277,0.047430\",\"0.017748,-0.047277,0.047430\",\"0.017748,-0.047277,0.047430\",\"0.017748,-0.047277,0.047430\",\"0.009180,-0.061353,0.040392\",\"0.009180,-0.061353,0.040392\",\"0.009180,-0.061353,0.040392\",\"0.009180,-0.061353,0.040392\",\"0.009180,-0.061353,0.040392\",\"0.009180,-0.061353,0.040392\",\"0.029529,-0.052632,0.039474\",\"0.029529,-0.052632,0.039474\",\"0.029529,-0.052632,0.039474\",\"0.029529,-0.052632,0.039474\",\"0.013158,-0.055539,0.056916\",\"0.013158,-0.055539,0.056916\",\"0.013158,-0.055539,0.056916\",\"0.023409,-0.055998,0.044829\",\"0.019584,-0.043758,0.042993\",\"0.019584,-0.043758,0.042993\",\"0.019584,-0.043758,0.042993\",\"0.019584,-0.043758,0.042993\",\"0.019584,-0.043758,0.042993\",\"0.019584,-0.043758,0.042993\",\"0.019737,-0.058752,0.052938\",\"0.019737,-0.058752,0.052938\",\"0.019737,-0.058752,0.052938\",\"0.019737,-0.058752,0.052938\",\"0.019737,-0.058752,0.052938\",\"0.019737,-0.058752,0.052938\",\"0.016983,-0.057528,0.042687\",\"0.016983,-0.057528,0.042687\",\"0.016983,-0.057528,0.042687\",\"0.017748,-0.047277,0.047430\",\"0.017748,-0.047277,0.047430\",\"0.015147,-0.048960,0.033354\",\"0.017901,-0.054009,0.054774\",\"0.017901,-0.054009,0.054774\",\"0.017901,-0.054009,0.054774\",\"0.017901,-0.054009,0.054774\",\"0.018360,-0.054315,0.045594\",\"0.018360,-0.054315,0.045594\",\"0.018360,-0.054315,0.045594\",\"0.018360,-0.054315,0.045594\",\"0.018360,-0.054315,0.045594\",\"0.018360,-0.054315,0.045594\",\"0.017442,-0.043299,0.045135\",\"0.017442,-0.043299,0.045135\",\"0.017442,-0.043299,0.045135\",\"0.017442,-0.043299,0.045135\",\"0.029529,-0.052632,0.039474\",\"0.029529,-0.052632,0.039474\",\"0.013158,-0.055539,0.056916\",\"0.013158,-0.055539,0.056916\",\"0.013158,-0.055539,0.056916\",\"0.015147,-0.048960,0.033354\",\"0.015147,-0.048960,0.033354\",\"0.015147,-0.048960,0.033354\",\"0.015147,-0.048960,0.033354\",\"0.026775,-0.061659,0.045135\",\"0.026775,-0.061659,0.045135\",\"0.009486,-0.054774,0.030447\",\"0.009486,-0.054774,0.030447\",\"0.009486,-0.054774,0.030447\",\"0.009486,-0.054774,0.030447\",\"0.017748,-0.057681,0.049419\",\"0.017748,-0.057681,0.049419\",\"0.017748,-0.057681,0.049419\",\"0.017748,-0.057681,0.049419\",\"0.017748,-0.057681,0.049419\",\"0.017748,-0.057681,0.049419\",\"0.023409,-0.055998,0.044829\",\"0.023409,-0.055998,0.044829\",\"0.023409,-0.055998,0.044829\",\"0.023409,-0.055998,0.044829\",\"0.023409,-0.055998,0.044829\"}" read_hdr_envi(path_hdr) #> $dim #> [1] 128 128 81 #> #> $wavelength #> [1] 500 505 510 515 520 525 530 535 540 545 550 555 560 565 570 575 580 585 590 #> [20] 595 600 605 610 615 620 625 630 635 640 645 650 655 660 665 670 675 680 685 #> [39] 690 695 700 705 710 715 720 725 730 735 740 745 750 755 760 765 770 775 780 #> [58] 785 790 795 800 805 810 815 820 825 830 835 840 845 850 855 860 865 870 875 #> [77] 880 885 890 895 900 #> #> $gain #> [1] 0.000000 0.000000 0.001086 0.001104 0.001147 0.001175 0.001160 0.001120 #> [9] 0.001137 0.001155 0.001152 0.001147 0.001168 0.001207 0.001238 0.001248 #> [17] 0.001248 0.001277 0.001338 0.001372 0.001362 0.001349 0.001097 0.001131 #> [25] 0.001182 0.001253 0.001413 0.001726 0.001977 0.002439 0.001997 0.001656 #> [33] 0.001605 0.001633 0.001698 0.001758 0.001776 0.001768 0.001740 0.001717 #> [41] 0.002088 0.002225 0.002339 0.002429 0.002459 0.002431 0.002388 0.002362 #> [49] 0.002390 0.002473 0.002576 0.002645 0.002670 0.002656 0.002618 0.002066 #> [57] 0.002090 0.002145 0.002222 0.002324 0.002426 0.002511 0.002572 0.002586 #> [65] 0.001856 0.001868 0.001911 0.001993 0.002105 0.002230 0.002338 0.002419 #> [73] 0.002478 0.002522 0.002564 0.002600 0.002653 0.002728 0.002836 0.002964 #> [81] 0.003128 #> #> $irradiance #> [1] 175.9901 175.9901 174.2079 174.2079 174.2079 174.8020 174.8020 174.8020 #> [9] 174.8020 174.8020 174.8020 174.8020 174.6040 174.6040 174.6040 174.6040 #> [17] 174.6040 174.6040 174.6040 174.6040 174.5544 174.5544 174.7030 174.7030 #> [25] 174.7030 174.7030 174.7030 174.7030 174.7030 174.7030 174.2079 174.2079 #> [33] 174.2079 174.2079 174.2079 174.2079 174.2079 174.2079 174.8020 174.8020 #> [41] 174.8515 174.8515 174.8515 174.8515 174.8515 174.8515 174.8515 174.8515 #> [49] 175.5445 175.5445 175.5445 175.5445 175.5445 175.5445 175.5445 174.6040 #> [57] 174.6040 174.5544 174.5544 174.5544 174.5544 174.5544 174.5544 174.5544 #> [65] 174.8515 174.8515 174.8515 174.8515 174.8515 174.8515 175.0495 175.0495 #> [73] 175.0495 175.0495 175.0495 175.0495 175.0495 175.0495 175.0495 175.0495 #> [81] 174.7030 #> #> $coordinates #> x y #> [1,] 21.18553 52.07559 #> [2,] 21.18553 52.07559 #> [3,] 21.18553 52.07559 #> [4,] 21.18553 52.07559 #> [5,] 21.18553 52.07559 #> [6,] 21.18553 52.07559 #> [7,] 21.18553 52.07559 #> [8,] 21.18553 52.07559 #> [9,] 21.18553 52.07559 #> [10,] 21.18553 52.07559 #> [11,] 21.18553 52.07559 #> [12,] 21.18553 52.07559 #> [13,] 21.18553 52.07559 #> [14,] 21.18553 52.07559 #> [15,] 21.18553 52.07559 #> [16,] 21.18553 52.07559 #> [17,] 21.18553 52.07559 #> [18,] 21.18553 52.07559 #> [19,] 21.18553 52.07559 #> [20,] 21.18553 52.07559 #> [21,] 21.18553 52.07559 #> [22,] 21.18553 52.07559 #> [23,] 21.18553 52.07559 #> [24,] 21.18553 52.07559 #> [25,] 21.18553 52.07559 #> [26,] 21.18553 52.07559 #> [27,] 21.18553 52.07559 #> [28,] 21.18553 52.07559 #> [29,] 21.18553 52.07559 #> [30,] 21.18553 52.07559 #> [31,] 21.18553 52.07559 #> [32,] 21.18553 52.07559 #> [33,] 21.18553 52.07559 #> [34,] 21.18553 52.07559 #> [35,] 21.18553 52.07559 #> [36,] 21.18553 52.07559 #> [37,] 21.18553 52.07559 #> [38,] 21.18553 52.07559 #> [39,] 21.18553 52.07559 #> [40,] 21.18553 52.07559 #> [41,] 21.18553 52.07559 #> [42,] 21.18553 52.07559 #> [43,] 21.18553 52.07559 #> [44,] 21.18553 52.07559 #> [45,] 21.18553 52.07559 #> [46,] 21.18553 52.07559 #> [47,] 21.18553 52.07559 #> [48,] 21.18553 52.07559 #> [49,] 21.18553 52.07559 #> [50,] 21.18553 52.07559 #> [51,] 21.18553 52.07559 #> [52,] 21.18553 52.07559 #> [53,] 21.18553 52.07559 #> [54,] 21.18553 52.07559 #> [55,] 21.18553 52.07559 #> [56,] 21.18553 52.07559 #> [57,] 21.18553 52.07559 #> [58,] 21.18553 52.07559 #> [59,] 21.18553 52.07559 #> [60,] 21.18553 52.07559 #> [61,] 21.18553 52.07559 #> [62,] 21.18553 52.07559 #> [63,] 21.18553 52.07559 #> [64,] 21.18553 52.07559 #> [65,] 21.18553 52.07559 #> [66,] 21.18553 52.07559 #> [67,] 21.18553 52.07559 #> [68,] 21.18553 52.07559 #> [69,] 21.18553 52.07559 #> [70,] 21.18553 52.07559 #> [71,] 21.18553 52.07559 #> [72,] 21.18553 52.07559 #> [73,] 21.18553 52.07559 #> [74,] 21.18553 52.07559 #> [75,] 21.18553 52.07559 #> [76,] 21.18553 52.07559 #> [77,] 21.18553 52.07559 #> [78,] 21.18553 52.07559 #> [79,] 21.18553 52.07559 #> [80,] 21.18553 52.07559 #> [81,] 21.18553 52.07559 #> #> $extents #> NULL #> #> $CRS #> NULL #> # Example 2 - set up the CRS to UTM and retrieve extents read_hdr_envi(path_hdr, hFOV = 36.8, vFOV = 36.8, height = 45) #> $dim #> [1] 128 128 81 #> #> $wavelength #> [1] 500 505 510 515 520 525 530 535 540 545 550 555 560 565 570 575 580 585 590 #> [20] 595 600 605 610 615 620 625 630 635 640 645 650 655 660 665 670 675 680 685 #> [39] 690 695 700 705 710 715 720 725 730 735 740 745 750 755 760 765 770 775 780 #> [58] 785 790 795 800 805 810 815 820 825 830 835 840 845 850 855 860 865 870 875 #> [77] 880 885 890 895 900 #> #> $gain #> [1] 0.000000 0.000000 0.001086 0.001104 0.001147 0.001175 0.001160 0.001120 #> [9] 0.001137 0.001155 0.001152 0.001147 0.001168 0.001207 0.001238 0.001248 #> [17] 0.001248 0.001277 0.001338 0.001372 0.001362 0.001349 0.001097 0.001131 #> [25] 0.001182 0.001253 0.001413 0.001726 0.001977 0.002439 0.001997 0.001656 #> [33] 0.001605 0.001633 0.001698 0.001758 0.001776 0.001768 0.001740 0.001717 #> [41] 0.002088 0.002225 0.002339 0.002429 0.002459 0.002431 0.002388 0.002362 #> [49] 0.002390 0.002473 0.002576 0.002645 0.002670 0.002656 0.002618 0.002066 #> [57] 0.002090 0.002145 0.002222 0.002324 0.002426 0.002511 0.002572 0.002586 #> [65] 0.001856 0.001868 0.001911 0.001993 0.002105 0.002230 0.002338 0.002419 #> [73] 0.002478 0.002522 0.002564 0.002600 0.002653 0.002728 0.002836 0.002964 #> [81] 0.003128 #> #> $irradiance #> [1] 175.9901 175.9901 174.2079 174.2079 174.2079 174.8020 174.8020 174.8020 #> [9] 174.8020 174.8020 174.8020 174.8020 174.6040 174.6040 174.6040 174.6040 #> [17] 174.6040 174.6040 174.6040 174.6040 174.5544 174.5544 174.7030 174.7030 #> [25] 174.7030 174.7030 174.7030 174.7030 174.7030 174.7030 174.2079 174.2079 #> [33] 174.2079 174.2079 174.2079 174.2079 174.2079 174.2079 174.8020 174.8020 #> [41] 174.8515 174.8515 174.8515 174.8515 174.8515 174.8515 174.8515 174.8515 #> [49] 175.5445 175.5445 175.5445 175.5445 175.5445 175.5445 175.5445 174.6040 #> [57] 174.6040 174.5544 174.5544 174.5544 174.5544 174.5544 174.5544 174.5544 #> [65] 174.8515 174.8515 174.8515 174.8515 174.8515 174.8515 175.0495 175.0495 #> [73] 175.0495 175.0495 175.0495 175.0495 175.0495 175.0495 175.0495 175.0495 #> [81] 174.7030 #> #> $coordinates #> x y #> [1,] 21.18553 52.07559 #> [2,] 21.18553 52.07559 #> [3,] 21.18553 52.07559 #> [4,] 21.18553 52.07559 #> [5,] 21.18553 52.07559 #> [6,] 21.18553 52.07559 #> [7,] 21.18553 52.07559 #> [8,] 21.18553 52.07559 #> [9,] 21.18553 52.07559 #> [10,] 21.18553 52.07559 #> [11,] 21.18553 52.07559 #> [12,] 21.18553 52.07559 #> [13,] 21.18553 52.07559 #> [14,] 21.18553 52.07559 #> [15,] 21.18553 52.07559 #> [16,] 21.18553 52.07559 #> [17,] 21.18553 52.07559 #> [18,] 21.18553 52.07559 #> [19,] 21.18553 52.07559 #> [20,] 21.18553 52.07559 #> [21,] 21.18553 52.07559 #> [22,] 21.18553 52.07559 #> [23,] 21.18553 52.07559 #> [24,] 21.18553 52.07559 #> [25,] 21.18553 52.07559 #> [26,] 21.18553 52.07559 #> [27,] 21.18553 52.07559 #> [28,] 21.18553 52.07559 #> [29,] 21.18553 52.07559 #> [30,] 21.18553 52.07559 #> [31,] 21.18553 52.07559 #> [32,] 21.18553 52.07559 #> [33,] 21.18553 52.07559 #> [34,] 21.18553 52.07559 #> [35,] 21.18553 52.07559 #> [36,] 21.18553 52.07559 #> [37,] 21.18553 52.07559 #> [38,] 21.18553 52.07559 #> [39,] 21.18553 52.07559 #> [40,] 21.18553 52.07559 #> [41,] 21.18553 52.07559 #> [42,] 21.18553 52.07559 #> [43,] 21.18553 52.07559 #> [44,] 21.18553 52.07559 #> [45,] 21.18553 52.07559 #> [46,] 21.18553 52.07559 #> [47,] 21.18553 52.07559 #> [48,] 21.18553 52.07559 #> [49,] 21.18553 52.07559 #> [50,] 21.18553 52.07559 #> [51,] 21.18553 52.07559 #> [52,] 21.18553 52.07559 #> [53,] 21.18553 52.07559 #> [54,] 21.18553 52.07559 #> [55,] 21.18553 52.07559 #> [56,] 21.18553 52.07559 #> [57,] 21.18553 52.07559 #> [58,] 21.18553 52.07559 #> [59,] 21.18553 52.07559 #> [60,] 21.18553 52.07559 #> [61,] 21.18553 52.07559 #> [62,] 21.18553 52.07559 #> [63,] 21.18553 52.07559 #> [64,] 21.18553 52.07559 #> [65,] 21.18553 52.07559 #> [66,] 21.18553 52.07559 #> [67,] 21.18553 52.07559 #> [68,] 21.18553 52.07559 #> [69,] 21.18553 52.07559 #> [70,] 21.18553 52.07559 #> [71,] 21.18553 52.07559 #> [72,] 21.18553 52.07559 #> [73,] 21.18553 52.07559 #> [74,] 21.18553 52.07559 #> [75,] 21.18553 52.07559 #> [76,] 21.18553 52.07559 #> [77,] 21.18553 52.07559 #> [78,] 21.18553 52.07559 #> [79,] 21.18553 52.07559 #> [80,] 21.18553 52.07559 #> [81,] 21.18553 52.07559 #> #> $extents #> xmin xmax ymin ymax #> [1,] 512700.2 512730.1 5769447 5769477 #> [2,] 512700.2 512730.1 5769447 5769477 #> [3,] 512700.2 512730.1 5769447 5769477 #> [4,] 512700.2 512730.1 5769447 5769477 #> [5,] 512700.2 512730.1 5769447 5769477 #> [6,] 512700.2 512730.1 5769447 5769477 #> [7,] 512700.2 512730.1 5769447 5769477 #> [8,] 512700.2 512730.1 5769447 5769477 #> [9,] 512700.2 512730.1 5769447 5769477 #> [10,] 512700.2 512730.1 5769447 5769477 #> [11,] 512700.2 512730.1 5769447 5769477 #> [12,] 512700.2 512730.1 5769447 5769477 #> [13,] 512700.2 512730.1 5769447 5769477 #> [14,] 512700.2 512730.1 5769447 5769477 #> [15,] 512700.2 512730.1 5769447 5769477 #> [16,] 512700.2 512730.1 5769447 5769477 #> [17,] 512700.2 512730.1 5769447 5769477 #> [18,] 512700.2 512730.1 5769447 5769477 #> [19,] 512700.2 512730.1 5769447 5769477 #> [20,] 512700.2 512730.1 5769447 5769477 #> [21,] 512700.2 512730.1 5769447 5769477 #> [22,] 512700.2 512730.1 5769447 5769477 #> [23,] 512700.2 512730.1 5769447 5769477 #> [24,] 512700.2 512730.1 5769447 5769477 #> [25,] 512700.2 512730.1 5769447 5769477 #> [26,] 512700.2 512730.1 5769447 5769477 #> [27,] 512700.2 512730.1 5769447 5769477 #> [28,] 512700.2 512730.1 5769447 5769477 #> [29,] 512700.2 512730.1 5769447 5769477 #> [30,] 512700.2 512730.1 5769447 5769477 #> [31,] 512700.2 512730.1 5769447 5769477 #> [32,] 512700.2 512730.1 5769447 5769477 #> [33,] 512700.2 512730.1 5769447 5769477 #> [34,] 512700.2 512730.1 5769447 5769477 #> [35,] 512700.2 512730.1 5769447 5769477 #> [36,] 512700.2 512730.1 5769447 5769477 #> [37,] 512700.2 512730.1 5769447 5769477 #> [38,] 512700.2 512730.1 5769447 5769477 #> [39,] 512700.2 512730.1 5769447 5769477 #> [40,] 512700.2 512730.1 5769447 5769477 #> [41,] 512700.2 512730.1 5769447 5769477 #> [42,] 512700.2 512730.1 5769447 5769477 #> [43,] 512700.2 512730.1 5769447 5769477 #> [44,] 512700.2 512730.1 5769447 5769477 #> [45,] 512700.2 512730.1 5769447 5769477 #> [46,] 512700.2 512730.1 5769447 5769477 #> [47,] 512700.2 512730.1 5769447 5769477 #> [48,] 512700.2 512730.1 5769447 5769477 #> [49,] 512700.2 512730.1 5769447 5769477 #> [50,] 512700.2 512730.1 5769447 5769477 #> [51,] 512700.2 512730.1 5769447 5769477 #> [52,] 512700.2 512730.1 5769447 5769477 #> [53,] 512700.2 512730.1 5769447 5769477 #> [54,] 512700.2 512730.1 5769447 5769477 #> [55,] 512700.2 512730.1 5769447 5769477 #> [56,] 512700.2 512730.1 5769447 5769477 #> [57,] 512700.2 512730.1 5769447 5769477 #> [58,] 512700.2 512730.1 5769447 5769477 #> [59,] 512700.2 512730.1 5769447 5769477 #> [60,] 512700.2 512730.1 5769447 5769477 #> [61,] 512700.2 512730.1 5769447 5769477 #> [62,] 512700.2 512730.1 5769447 5769477 #> [63,] 512700.2 512730.1 5769447 5769477 #> [64,] 512700.2 512730.1 5769447 5769477 #> [65,] 512700.2 512730.1 5769447 5769477 #> [66,] 512700.2 512730.1 5769447 5769477 #> [67,] 512700.2 512730.1 5769447 5769477 #> [68,] 512700.2 512730.1 5769447 5769477 #> [69,] 512700.2 512730.1 5769447 5769477 #> [70,] 512700.2 512730.1 5769447 5769477 #> [71,] 512700.2 512730.1 5769447 5769477 #> [72,] 512700.2 512730.1 5769447 5769477 #> [73,] 512700.2 512730.1 5769447 5769477 #> [74,] 512700.2 512730.1 5769447 5769477 #> [75,] 512700.2 512730.1 5769447 5769477 #> [76,] 512700.2 512730.1 5769447 5769477 #> [77,] 512700.2 512730.1 5769447 5769477 #> [78,] 512700.2 512730.1 5769447 5769477 #> [79,] 512700.2 512730.1 5769447 5769477 #> [80,] 512700.2 512730.1 5769447 5769477 #> [81,] 512700.2 512730.1 5769447 5769477 #> #> $CRS #> [1] "+proj=utm +zone=34 +datum=WGS84 +ellps=intl +units=m +no_defs" #>