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View Code? Open in Web Editor NEWNLCD_INEGI: Harmonized US-Mexico Land Cover Classifications from NLCD and INEGI, 1992/2001/2011
License: GNU General Public License v2.0
NLCD_INEGI: Harmonized US-Mexico Land Cover Classifications from NLCD and INEGI, 1992/2001/2011
License: GNU General Public License v2.0
"mix" comment in the example $LU_CODES_TABLE file
The "process_urban_lu_map.pl" script uses "mix" to identify those class codes that need to be replaced with NLCD_INEGI class codes. However, the example $LU_CODES_TABLE file uses "mixed" , which might be misleading to users.
wrong column number
The "process_urban_lu_map.pl" reads column 3 of the $LU_CODES_TABLE file to decide if the class needs to be replaced or not. However, the example $LU_CODES_TABLE file puts the "nulled"/"mix" comment in the 4th column. Thus, the $fields[2] should be changed to $fields[3] in line 37, 40 and 43.
file name rule of the "$LAND_USE_FILE"
The first argument read by the "process_urban_lu_map.pl" script ("$LAND_USE_FILE" ) needs to be end with ".resolution_deg.asc". It'd better to specify this in the documentation file.
The "process_urban_lu_map.pl" thinks that the spatial resolution of NLCD map is 0.0003508840696170 degree. I'm not sure why this values was selected. But, this is not always the case. For example, the resolution I used is 0.000341219290263889 degree and this caused problem in the overlaying step. It'd be more reasonable to read the spatial resolution from the header of the nlcd map or from user input.
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