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There are a couple of ways to make your contours smoother. Looking at the contours, I suspect it's because the IDW raster is low resolution. Did you use the default size (300x300) when creating this? Resize your IDW raster Probably the easiest way :- take your existing IDW raster and make it bigger with gdal warp (Raster > Projections > Warp). ...


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You need to set a definition query (see link in @PolyGeo's answer) to show only the selected features that you wanted labeled. This can be done through the definition query tab in properties or through the labelling options called label classes (note - see @ChrisW comments below). I use these solution quite regularly and find them easy to do.


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You need to write an expression in the label tool, to make only your desired values visible. Double-click the layer properties and select the label tab. Locate the "Expression" button and select it. Now you have to write the expression that will visualize only the desired values. You can choose between VBScript, Python, Jscript. You will need to check ...


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The Symbology tab of the Layer Properties does not perform any selections. If you want the same features to not be labelled, I recommend that you apply a Definition Query instead: When you specify a dataset that you want to draw as a map layer, you often only want to draw some of the features in the dataset. In these situations, you can define a ...


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This could be done with Arc's Topo To Raster tool. This tool uses some algorithm for interpolating a raster surface from data you would find on a topographic map. There's a lot going on in this tool, so take the time to read through the Arc resources page for best results. You can set contours as your primary data source, and it will generate a surface ...


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You can use the buffer tool (Analysis tools > Proximity) to create equidistant buffers around points. Setting the Dissolve Type to ALL will dissolve the individual buffers into one continuous line feature. Run the tool multiple times to create buffers for each distance you need. If you need buffers around only a subset of all the points, I recommend ...



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