I'm not understanding how to get a reference from a .jpg file

I have the following code: % read colorado tif file % Pathname = 'C:\Users\chammerschmidt\Documents\Projects\TerrainData\CombineBoulder_N39_N40_W106\'; Filename = 'N39_N40_W106_LatLong.jpg'; cd(Pathname) % states = geoshape(shaperead('usastatehi','UseGeoCoords',true)); stateName = 'Colorado'; co = states(strcmp(states.Name, stateName)); latlim = [min(co.Latitude),max(co.Latitude)]; lonlim = [min(co.Longitude),max(co.Longitude)]; [latlim, lonlim] = bufgeoquad(latlim,lonlim, 0.05, 0.05); % RGB = imread(Filename); WorldFileName = getworldfilename(Filename); R = worldfileread(WorldFileName,'geographic',size(RGB)); % figure(1) ax = usamap(latlim,lonlim); oceanColor = [0.5 0.7 0.9]; setm(ax,'FFaceColor',oceanColor) geoshow(states) geoshow(co, 'LineWidth',1.5,'FaceColor',[0.5 0.8 0.6]) geoshow(Filename,'DisplayType','image'); % disp('the end') And I am getting the error 'Error using internal.map.checkfilename>checkDiskfilename (line 172) Function WORLDFILEREAD was unable to find file 'N39_N40_W106_LatLong.jgw'.

Error in internal.map.checkfilename (line 55) [fullfilename, fid]=checkDiskfilename(filename, ext, function_name);

Error in worldfileread (line 50) worldFileName = internal.map.checkfilename(worldFileName, {}, mfilename, 1, false);

Error in ReadColoradoTiffile (line 16) R = worldfileread(WorldFileName,'geographic',size(RGB));'

And I don't understand how to get R. Chriss

[Stephen23]

Please edit your question and use the text formatting tools that are above the text box. There is one specifically marked "code", and using this (together with the preview pane underneath the text box) makes our lives a lots easier, as then we can actually read your code... it increases the chances of you getting the right answer to your problem!

Answer 1

[Chad Greene]

Agh, it's tough to read proportionally-spaced code. I see an inconsistency in the file names you're calling. You've defined,

Filename = 'N39_N40_W106_LatLong.jpg';

however, the worldfileread function is trying to call a file called 'N39_N40_W106_LatLong.jgw'. Is that file extension a typo?

[Chriss Hammerschmidt]

I use the getworldfilename to change the extension to the .jpw. I guess I am not understanding. I could send you the code and the file so that it would be easier to read and debug if you would like. Chriss

[Chad Greene]

Sorry, I don't know much about worldfiles. Hopefully someone else on the forum can help.

Answer 2

[Chriss Hammerschmidt]

I use the getworldfilename to change the extension to the .jpw. I guess I am not understanding. I could send you the code and the file so that it would be easier to read and debug if you would like. Chriss