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I am looking at fish tagging data. I have gps coordinates of where each fish was tagged and released, and I have a map of 10 coastal basins of the state of Louisiana. I am trying to determine which basin...
Hi Roger- Getting closer to fixing the problem. You were correct with the proj4string differing. The fish capture coordinates are "NA" and the Basins are "+proj=longlat +ellps=WGS84." So now I am trying to convert the points. Here is...
Thank you for your help! I had a table (as a data.frame, 2 columns) of each polygon ID and # of fish tagged in it. Linking it back to the spatial data was my missing step. I used spCbind to...
I am looking at fish tagging data throughout the state of Louisiana. I have a shapefile of the state divided into 480 polygons, and I would like to make a chloropleth map by number of fish tagged in each polygon...
I am new to mapping with R, and I would like to use the point.in.polygon function from the sp package, but I am unsure of how to get my data in the correct format for the function. The...
I'm having trouble with some catch per unit effort data (CPUE, fisheries data). Some of the samples were "retained" and some "unretained," and they are entered as 2 separate entries for the same sampling event (Date and time). I...
I am new to mapping with R and having some trouble. Here is what I am trying to accomplish. I am looking at fish tagging data. I have gps coordinates of where each fish was tagged and released, and I...
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