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<blockquote data-quote="Marius Delphus" data-source="post: 5631953" data-attributes="member: 447">So far I am finding that taking measurements is much easier in the GIMP (<a href="http://www.gimp.org" target="_blank">GIMP - The GNU Image Manipulation Program</a>) than it is in Paint.NET. I add a layer, count off about 30 squares so I have a good &quot;sample size&quot; (I use the paintbrush on the new layer to &quot;dot&quot; the squares I've counted -- a new layer so I don't accidentally mark the map itself), loop the squares with the rectangular selection tool, then zoom in to finesse the selection.I haven't discovered a way to do this in Paint.NET. It's possible in the GIMP (and Photoshop of course) because you have the ability to directly adjust the selection rectangle after you've drawn it (by simply grabbing a corner or side and dragging), which makes the &quot;loop-zoom-adjust&quot; technique feasible in the first place. Of course the GIMP is a Java application, and Paint.NET is a native Windows application, etc. etc.I certainly think the &quot;blue measure&quot; is the way to go. And my measurements of the &quot;original&quot; Coaltongue map (not extracted from the PDF) match the 28.8ish measures, so I think I'm doing it right. <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile&nbsp; &nbsp; :)"&nbsp; data-smilie="1"data-shortname=":)" /> (I also got the &quot;squares weren't square&quot; result.)Finally, I've had a look at my rescaled version in MapTool (I also needed more than one attempt) and it seems to be OK -- one or two pixels off at the extreme end (which I finally solved with a quick &quot;touch-up&quot; resizing in the GIMP). So when I get some time, I'll use this procedure to re-measure the maps from the &quot;preview&quot; thread and post my&nbsp; results (remembering to double-check for non-square squares in the unlikely event that happened to another map). But if you don't want to wait for me, I can recommend using the GIMP to take the measurements (and doing the rescaling).</blockquote>

[QUOTE="Marius Delphus, post: 5631953, member: 447"] So far I am finding that taking measurements is much easier in the GIMP ([url=http://www.gimp.org]GIMP - The GNU Image Manipulation Program[/url]) than it is in Paint.NET. I add a layer, count off about 30 squares so I have a good "sample size" (I use the paintbrush on the new layer to "dot" the squares I've counted -- a new layer so I don't accidentally mark the map itself), loop the squares with the rectangular selection tool, then zoom in to finesse the selection. I haven't discovered a way to do this in Paint.NET. It's possible in the GIMP (and Photoshop of course) because you have the ability to directly adjust the selection rectangle after you've drawn it (by simply grabbing a corner or side and dragging), which makes the "loop-zoom-adjust" technique feasible in the first place. Of course the GIMP is a Java application, and Paint.NET is a native Windows application, etc. etc. I certainly think the "blue measure" is the way to go. And my measurements of the "original" Coaltongue map (not extracted from the PDF) match the 28.8ish measures, so I think I'm doing it right. :) (I also got the "squares weren't square" result.) Finally, I've had a look at my rescaled version in MapTool (I also needed more than one attempt) and it seems to be OK -- one or two pixels off at the extreme end (which I finally solved with a quick "touch-up" resizing in the GIMP). So when I get some time, I'll use this procedure to re-measure the maps from the "preview" thread and post my results (remembering to double-check for non-square squares in the unlikely event that happened to another map). But if you don't want to wait for me, I can recommend using the GIMP to take the measurements (and doing the rescaling). [/QUOTE]

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