I have digital orthophotographs from 2013 that I'm attempting to reclassify in an effort to extract all the cultivated/pasture land from. I'm using the "Reclassify by Ascii File" tool for this procedure. According to the NLC database values 81-84 are what I'm looking for and this seems to be correct. The issue I'm running into is that the reclassification seems to be the opposite of what I need.
My remap file called "remapfile.txt" is as follows:
81 84 : 1
I understand this as extracting pixels with values 81,82,83, and 84 and remapping them to a value of 1. I check the box to send all other values to NODATA. However, what is returned seems to be the opposite. All the areas that have values of 81-84 are mapped as NODATA and all other points are mapped to a value of 1.
Is there a better way to do what I'm doing???
I'm fairly proficient in Python if that helps.
أكثر...
My remap file called "remapfile.txt" is as follows:
81 84 : 1
I understand this as extracting pixels with values 81,82,83, and 84 and remapping them to a value of 1. I check the box to send all other values to NODATA. However, what is returned seems to be the opposite. All the areas that have values of 81-84 are mapped as NODATA and all other points are mapped to a value of 1.
Is there a better way to do what I'm doing???
I'm fairly proficient in Python if that helps.
أكثر...