pkinfo(1) Report basic information from raster datasets


pkinfo -i input [options]


pkinfo retrieves basic information about a raster data set (similar to gdalinfo(1)). An important difference with gdalinfo is that pkinfo only reports the information that is requested via the corresponding command line option, whereas gdalinfo provides all basic information at once. The reported information is in a format that can be used as input for other pktools utilities. This mechanism facilitates command substitution in the bash scripting language.


-i filename, --input filename
Input image file
-bb, --bbox
Shows bounding box
-te, --te
Shows bounding box in GDAL format: xmin ymin xmax ymax
-c, --center
Image center in projected X,Y coordinates
-ct, --colortable
Shows colour table
-ns, --nsample
Number of samples in image
-nl, --nline
Number of lines in image
-nb, --nband
Show number of bands in image
-b band, --band band
Band specific information
-dx, --dx
Gets resolution in x (in m)
-dy, --dy
Gets resolution in y (in m)
-mm, --minmax
Shows min and max value of the image
-min, --minimum
Shows min value of the image
-max, --maximum
Shows max value of the image
-stats, --statistics
Shows statistics (min,max, mean and stdDev of the image)
-a_srs, --a_srs
Shows projection of the image
-geo, --geo
Gets geotransform
-il, --interleave
-f, --filename
Shows image filename
-cover, --cover
Print filename to STDOUT if current image covers the provided coordinates via bounding box, (x y) coordinates or extent of vector file
-x value, --xpos value
x pos
-y value, --ypos value
y pos
-r, --read
Reads row y (in projected coordinates if geo option is set, otherwise in image coordinates, 0 based)
-ref, --reference
Gets reference pixel (lower left corner of center of gravity pixel)
-of, --oformat
Gets driver description
-e filename, --extent filename
Gets boundary from vector file
-ulx ULX, --ulx ULX
Upper left x value bounding box
-uly ULY, --uly ULY
Upper left y value bounding box
-lrx LRX, --lrx LRX
Lower right x value bounding box
-lry LRY, --lry LRY
Lower right y value bounding box
-ot, --otype
-d, --description
Returns image description
-meta, --meta
Shows meta data
-nodata value, --nodata value
Sets no data value(s) for calculations (nodata values in input image)


show number of bands in raster image.tif

pkinfo -i image.tif -nb

show maximum value of band 1 (starting from 0) of raster image.tif

pkinfo -i image.tif -max -b 1

read (dump) upper left pixel value for bands 3,2,1

pkinfo -i image.tif -x 0 -y 0 -r -b 3 -b 2 -b 1

read (dump) pixel value at this geographic location (x,y) for bands 3,2,1

pkinfo -i image.tif -x 3528120 -y 4329681 -geo -r -b 3 -b 2 -b 1

show bounding box (-ulx -uly -lrx -lry) in geo coordinates for image1.tif

pkinfo -i image1.tif -b

show bounding box (-ulx -uly -lrx -lry) in geo coordinates for each image (and union and intersect)

pkinfo -i image1.tif -i image2.tif -i image3.tif -b

show the reference pixel (centre of gravity) for image1.tif, treating 0 and 255 as NO VALUE

pkinfo -i image1.tif --mask 0 --mask 255 -ref

read (dump) pixel value at image centre for band 0

pkinfo -i image.tif $(pkinfo -i image.tif -c) -geo -r

read (dump) pixel value in band 0 (default) for all images in current directory that cover this geographic location

pkinfo $(for IMAGE in modis_2010*.tif; do pkinfo -i $IMAGE --cover -x 4215500 -y 2534000; done) -x 4215500 -y 253400