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wiki:geo_tools [2017/12/05 22:53] (current)
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 +====== Geo Tools Scripts ======
 +
 +We recommend to look at [[http://​www.nongnu.org/​pktools/​html/​index.html| pk-tools]], [[http://​www.gdal.org/​gdal_utilities.html| Gdal-ogr]] and [[http://​km.fao.org/​OFwiki/​index.php/​Tools_%26_Exercises| Open-foris]] ​ for building stand alone geoprocessing routines.
 +This page collect a series of supplementary scripts that can be used as stand alone programs after installation.\\
 +
 +===== Zonal statistic =====
 +  * [[geotools_zonal_stat | ost4sem_zonal_stats.py]] calculates mean min max and stdev values of a continues raster (e.g. dem) based on a different categorized raster.\\
 +The output is a txt file with the statistical value of each category.\\
 +
 +===== Add item area to a shapefile =====
 +  * [[ addattr-area | addattr-area.py ]] Command line to add attribute area at each polygon in a shapefile.\\
 +===== Intersect two  shape files =====
 +  * [[ intersect-python | intersect.py ]] Command line to intersect two  shape files.\\
 +
 +===== Extract unique values between two raster maps =====
 +  * [[geotools_uniq | count_uniq.py]] extracts unique pare of values between two tifs/​rasters and stores the results in a txt file.
 +===== Dealing with simple statistic in large txt file =====
 +* [[ average | ost4sem_average.sh ]] calculate average of a txt file based on unique id column ​
 +\\
 +* [[ average_w | ost4sem_average_w.sh ]] calculate weigthed average of a txt file based on unique id column and weighted column ​
 +\\
 +* [[ sum | ost4sem_sum.sh ]] calculate sum of a txt file based on unique id column ​
 +\\
 +===== Create arc/info ascii grid =====
 +* [[ chess_grid | ost4sem_chess_grid.sh ]] create an arc/info chess_grid with pixel value 1 or 2 
 +\\
 +
 + * More ost4sem tools will be uploaded soon 
 +===== Modeling =====
 +Tools of correlation and modeling analisis between two images.
 +
 +* [[ pearson_tif | oft-pearson.bash ]] calcualte a r pearsono coefficencinet between two immages. ​
  
wiki/geo_tools.txt ยท Last modified: 2017/12/05 22:53 (external edit)