Man page - pkstatogr(1)
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apt-get install pktools
Manual
pkstatogr
NAMESYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
NAME
pkstatogr - program to calculate basic statistics from vector file
SYNOPSIS
pkstatogr -i input [ options ]
DESCRIPTION
pkstatogr calculates basic statistics on attributes of a vector file. Examples of the basic statistics include: minimum, maximum, median, mean and standard deviation. Histograms (in percentage or absolute values) can also be calculated. The attribute of interest can be selected using the option -n | --fname . Values defined by the -nodata option, or not within the limits set by the options -src_min and -src_max are ignored for the statistics.
OPTIONS
-i filename , --input filename
Input image file(s). If input contains multiple images, a multi-band output is created
-ln layer , --lname layer
Layer name(s) in sample (leave empty to select all)
-n attribute , --fname attribute
Fields on which to calculate statistics
-nodata value , --nodata value
Set nodata value(s)
-src_min value , --src_min value
Set minimum value for histogram
-src_max value , --src_max value
Set maximum value for histogram
-s , --size
Sample size (number of points)
-mm , --minmax
Calculate minimum and maximum value
-min , --min
Calculate minimum value
-max , --max
Calculate maximum value
-mean , --mean
Calculate mean
-median , --median
Calculate median
-stdev , --stdev
Calculate standard deviation
-hist , --hist
Calculate histogram
-nbin value , --nbin value
Number of bins to calculate histogram
-rel , --relative
Use percentiles for histogram to calculate histogram
-kde , --kde
Use Kernel ⟨ http://pktools.nongnu.org/html/classKernel.html⟩ density estimation when producing histogram. The standard deviation is estimated based on Silverman’s rule of thumb
-v level , --verbose level
Verbose level
EXAMPLE
report histogram of values in FIELDID (to standard output)
pkstatogr -i input.shp -f FIELDID -n 100
report min, max, mean and standard deviation of values in FIELDID (to standard output)
pkstatogr -i input.shp -f FIELDID -min -max -mean -stdev