pkstatogr - program to calculate basic statistics from vector
file
pkstatogr
-i input [options]
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.
- -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
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