<div dir="ltr"><div class="gmail_default" style="font-size:large"><span style="font-size:small">I tried with your shapefile, and got no errors. Here are the steps...</span><br style="font-size:small"><span style="font-size:small">First I created a new GRASS location matching the CRS of the shapefile:</span><div style="font-size:small"><br><font face="monospace">grass -c Coal-Test-Shapefile-main/coal_test.shp /home/micha/GIS/grass/michaela</font><br><br></div><div style="font-size:small">Check the projection:<br><font face="monospace"><br></font></div><div style="font-size:small"><font face="monospace">g.proj -p<br>-PROJ_INFO-------------------------------------------------<br>name : RD/83 / 3-degree Gauss-Kruger zone 5<br>ellps : bessel<br>proj : tmerc<br>lat_0 : 0<br>lon_0 : 15<br>k : 1<br>x_0 : 5500000<br>y_0 : 0<br>no_defs : defined<br>-PROJ_EPSG-------------------------------------------------<br>epsg : 3399<br>-PROJ_UNITS------------------------------------------------<br>unit : meter<br>units : meters<br>meters : 1</font><br><br>Then I imported your shapefile, and <u>set the computational region</u>:<br><font face="monospace"><br></font></div><div style="font-size:small"><font face="monospace">v.import Coal-Test-Shapefile-main/coal_test.shp output=coal_test<br>g.region -ap vect=coal_test<span class="gmail_default"><font size="4"> </font># Resolution is 1 meter, 1500x1500 pixels</span></font><br></div><div style="font-size:small"><font face="monospace"><br></font></div><div style="font-size:small"><span class="gmail_default">Now run the IDW module</span></div><div style="font-size:small"><span class="gmail_default" style="font-size:large"></span><font face="monospace">v.surf.idw input=coal colu=dbl_1 out=coal_idw_1<br>81 points loaded<br>Interpolating raster map <coal_idw_1> (1500 rows, 1500 columns)...<br> 100%<br>v.surf.idw complete.</font><br></div><div style="font-size:small"><font face="monospace"><br></font></div><div style="font-size:small"><font face="arial, sans-serif">R<span class="gmail_default">esulting image is attached. You can try other options to v.surf.idw to get a smoother interpolation, if necessary.</span></font></div><div style="font-size:small"><font face="arial, sans-serif"><span class="gmail_default">HTH</span></font></div><br class="gmail-Apple-interchange-newline"></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Feb 12, 2021 at 8:35 PM Michaela Lobato <<a href="mailto:amlobat2@illinois.edu">amlobat2@illinois.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi Markus, <div><br></div><div>Here is the information:</div><div><br></div><div><font face="monospace"><a href="http://v.info" target="_blank">v.info</a> -c map=coal_test@PERMANENT <br>INTEGER|cat<br>INTEGER|cat_<br>INTEGER|int_1<br>INTEGER|int_2<br>DOUBLE PRECISION|dbl_1<br>DOUBLE PRECISION|dbl_2<br>DOUBLE PRECISION|dbl_3<br>DOUBLE PRECISION|dbl_4<br>DOUBLE PRECISION|dbl_5<br>Displaying column types/names for database connection of layer <1>:</font><br></div><div><font face="monospace"><br></font></div><div><font face="monospace"><br></font></div><div><font face="monospace"><a href="http://v.info" target="_blank">v.info</a> -t map=coal_test@PERMANENT <br>nodes=0<br>points=96<br>lines=0<br>boundaries=0<br>centroids=0<br>areas=0<br>islands=0<br>primitives=96<br>map3d=0<br></font></div><div><br></div><div>You can also find the file here <a href="https://github.com/amlobat2/Coal-Test-Shapefile" target="_blank">https://github.com/amlobat2/Coal-Test-Shapefile</a>. Let me know if you need any additional information.</div><div><br></div><div>Best,</div><div>Michaela</div><div><font face="monospace"><br></font></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Feb 12, 2021 at 3:29 AM Markus Neteler <<a href="mailto:neteler@osgeo.org" target="_blank">neteler@osgeo.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi Michaela,<br>
<br>
On Thu, Feb 11, 2021 at 11:47 PM Michaela Lobato <<a href="mailto:amlobat2@illinois.edu" target="_blank">amlobat2@illinois.edu</a>> wrote:<br>
><br>
> Hello,<br>
><br>
> 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 sample dataset to a shapefile.<br>
<br>
Could you make this shapefile available? Or post the data structure?<br>
<br>
# attribute table structure<br>
<a href="http://v.info" rel="noreferrer" target="_blank">v.info</a> -c coal_test<br>
<br>
# vector types<br>
<a href="http://v.info" rel="noreferrer" target="_blank">v.info</a> -t coal_test<br>
<br>
?<br>
<br>
Best,<br>
Markus<br>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="font-size:12.7273px"><font color="#666666">A. Michaela Lobato</font></div><div style="font-size:12.7273px"><font color="#666666">BS Systems Engineering and Design | <span style="font-size:12.7273px">Autonomous Systems and Robotics | December 2019</span></font></div><div style="font-size:12.7273px"><font color="#666666">MS Systems and Entrepreneurial Engineering | Decision and Control | In Progress</font></div><div style="font-size:12.7273px"><font color="#666666">Email: <a href="mailto:amlobat2@illinois.edu" target="_blank">amlobat2@illinois.edu</a> | Cell: (815) 494-1111</font></div><div style="font-size:12.7273px"><img src="https://docs.google.com/uc?export=download&id=12Mrm91OiQLzwYTKHZM05I6o4_Afk8jsO&revid=0B1b-dt1AN-UYRjlSbnRzVlFUTTFiK0Zua05ldnhrSXVLaTYwPQ" width="200" height="54"><br></div></div></div></div></div></div></div>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature">Micha Silver<br>Ben Gurion Univ<br>Sde-Boker Remote Sensing Lab<br>cell: +972 (52) 3665918</div>