The output will be written to memory, so we need to export to it to a GIS file to keep it permanently.ĥ. Moreover the interval can be edited manually by double click the interval number.Ĥ. We can tweak the number if the interval is not correct. When we set the calculated number, the contour interval can be seen in the right list. Then the number of contour line will be: maximum elevation/contour interval. For example if we want to make a contour map in 100.000 scale, then the contour interval will be 1/2000 x 100.000 = 50 m. We can set any number, but I suggest the number of contour line follows the rule of thumb as mentioned above. Next, we have to define the number of contour lines. In the contouring menu, we can choose to create contour line, filled contour or both. Select the point's layer name and the elevation data field.
The contour plugin window will appear as in figure 4.ģ. Open the Contour plugin by clicking the icon. Add the points into QGIS map canvas as in figure3.Ģ. Now, let's make contour lines from points dataset with the following steps:ġ.
#CONTOUR INTERVAL CALCULATOR INSTALL#
Check it and Install the plugin if you don't have it in your QGIS 3. You will see the Contour plugin appears as in figure 2. As usual we can get the plugin from Plugins menu > Manage and install plugins. To create contour lines from points, we are using Contour plugin.
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