<div dir="ltr">Hello, <div><br></div><div>I have recently been struggling with an issue in GRASS. I am a new GRASS user and recently downloaded version 7.8.5 for my MacBook (macOS Catalina).  I converted this <a href="http://www.kriging.com/datasets/coal.dat">sample dataset</a> to a shapefile. I am able to load and visualize the file and set the region to be the loaded set of points. When I run v.surf.idw, I get the following error: </div><div><br></div><div><code style="box-sizing:border-box;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:11.9px;padding:0.2em 0.4em;margin:0px;border-radius:6px;color:rgb(36,41,46)">v.surf.idw input=coal_test@PERMANENT output=coal_test_tested</code><br style="box-sizing:border-box;color:rgb(36,41,46);font-family:-apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px"><code style="box-sizing:border-box;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:11.9px;padding:0.2em 0.4em;margin:0px;border-radius:6px;color:rgb(36,41,46)">Input vector map <coal_test@PERMANENT> is 2D - using categories to interpolate</code><br style="box-sizing:border-box;color:rgb(36,41,46);font-family:-apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px"><code style="box-sizing:border-box;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:11.9px;padding:0.2em 0.4em;margin:0px;border-radius:6px;color:rgb(36,41,46)">WARNING: No record for point (cat = 1)</code><br style="box-sizing:border-box;color:rgb(36,41,46);font-family:-apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px"><code style="box-sizing:border-box;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:11.9px;padding:0.2em 0.4em;margin:0px;border-radius:6px;color:rgb(36,41,46)">WARNING: No record for point (cat = 2)</code><br style="box-sizing:border-box;color:rgb(36,41,46);font-family:-apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px"><code style="box-sizing:border-box;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:11.9px;padding:0.2em 0.4em;margin:0px;border-radius:6px;color:rgb(36,41,46)">WARNING: No record for point (cat = 3)</code><br style="box-sizing:border-box;color:rgb(36,41,46);font-family:-apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px"><span style="color:rgb(36,41,46);font-family:-apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px">.</span><br style="box-sizing:border-box;color:rgb(36,41,46);font-family:-apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px"><span style="color:rgb(36,41,46);font-family:-apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px">.</span><br style="box-sizing:border-box;color:rgb(36,41,46);font-family:-apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px"><span style="color:rgb(36,41,46);font-family:-apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px">.</span><br style="box-sizing:border-box;color:rgb(36,41,46);font-family:-apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px"><code style="box-sizing:border-box;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:11.9px;padding:0.2em 0.4em;margin:0px;border-radius:6px;color:rgb(36,41,46)">WARNING: No record for point (cat = 96)</code><br style="box-sizing:border-box;color:rgb(36,41,46);font-family:-apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px"><code style="box-sizing:border-box;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:11.9px;padding:0.2em 0.4em;margin:0px;border-radius:6px;color:rgb(36,41,46)">0 points loaded</code><br style="box-sizing:border-box;color:rgb(36,41,46);font-family:-apple-system,system-ui,"Segoe UI",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";font-size:14px"><code style="box-sizing:border-box;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:11.9px;padding:0.2em 0.4em;margin:0px;border-radius:6px;color:rgb(36,41,46)">ERROR: No points found</code><br></div><div><code style="box-sizing:border-box;font-family:SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;font-size:11.9px;padding:0.2em 0.4em;margin:0px;border-radius:6px;color:rgb(36,41,46)"><br></code></div><div>I have tried to use v.surf.idw with different datasets as well and am still getting the same error. I've also tried re-installing GRASS GIS to no avail. I'd appreciate any help you can provide!<br></div><div><br></div><div>Thanks,</div><div>Michaela</div><div><br></div><div><div><br></div></div></div>