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Slope analysis is performed on a DEM (raster layer with elevation values)This is one way to do it. If your contours have an elevation value, you can use the interpolation option (raster/interpolation) to produce a DEM. For instance, here are my contours as a shape file The attribute table do have a value for altitudes in the "elevacion" field Now you ...


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In QGIS in order to do slope analysis, you need to convert the contour lines first into a raster DEM, then you can use Raster -> Terrain Analysis -> Slope. However, there is no direct tool that can help you to convert the contour line to DEM. The closest possible tool to do that is to use r.surf.contour located under Processing Toolbox -> Grass ...


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What you actually want to perform is an interpolation. Heat maps are used to estimate point density between observed points. When you check "Use weights from field", you are expressing that each point has a count other than 1, but the method is still estimating a point density. Interpolation, on the other hand, estimates values at unknown points between ...


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You might try creating an unweighted heat map raster then use the raster calculator to divide the weighted raster by the unweighted one and see if that gives you what you're looking for


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Check your Map Options. Here you can specify how MapInfo Pro should handle the rendering of images, text/labels as well as lines/borders. Right click on your Map in the Layers window, select Map Options. Try to set Smooth Images to None.


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It is possible. First you need to convert the .img files to a .mp format. A good tool for this procedure is MapEdit. Separate each symbol to its own .mp file. Then you can convert the .mp file to .shp


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Pretty simple. If your values are in 5 foot intervals and your elevation field is a numeric field, you can use a modulus query in the Definition Query to only show those records whose elevation value is even or odd. In your case, you're looking for even numbers. For a Personal Geodatabase, you'd use: [Elevation]/2 MOD 2 For Shapefiles or File ...



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