Pktools - Open Source Geospatial Tools: Applications in Earth Observation - page 175

-o|--output
Output sample dataset.
-c|--class
Class(es) to extract from input sample image. Leave empty to extract all valid
data pixels from sample dataset. Make sure to set classes if rule is set to mode or
proportion.
-t|--threshold
Probability threshold for selecting samples (randomly). Provide probability in
percentage ( 0). Use a single threshold for vector sample

datasets. If using raster land cover maps as a sample dataset, you can provide a
threshold value for each class (e.g. -t 80 -t 60). Use value 100 to select all pixels
for selected class(es) (default: 100).
-f|--f
Output sample dataset format (default: SQLite).
-ft|--ftype
Field type (only Real or Integer) (default: Real).
-lt|--ltype
Label type: In16 or String (default: Integer).
-polygon|--polygon
Create OGRPolygon as geometry instead of OGRPoint. (default: false).
-b|--band
Band index(es) to extract. Leave empty to use all bands.
-r|--rule
Rule how to report image information per feature (only for vector sample). Point
(extract value at each point covered by sample or at centroid if option -polygon is
set), centroid, mean, stdev, median, proportion, min, max, mode, sum. (default:
centroid).
-bndnodata|--bndnodata
Band(s) in input image to check if pixel is valid (used for srcnodata) (default: 0).
-srcnodata|--srcnodata
Invalid value(s) for input image.
-tp|--thresholdPolygon
(absolute) threshold for selecting samples in each polygon.
-test|--test
Test sample dataset (use this option in combination with threshold

< 0) or absolute ( >

< 100 to

create a training (output) and test set.
-bn|--bname
For single band input data, this extra attribute name will correspond to the raster
values. For multi-band input data, multiple attributes with this prefix will be
added (e.g. b0, b1, b2, etc.) (default: b).
-cn|--cname
Name of the class label in the output vector dataset (default: label).