I have a vector contour data(polyline). I want to add values to each contour lines. Means I want to digitize my contour lines with proper values. Those values are with me in a paper. I'm adding those (z values) in the "id" column in the attribute table after selecting each line separately. it's taking a lot of time since there are around 20000 lines. Actually I created these contours after digitizing my raster map. (raster to vector conversion after scanning those maps)
Is there any way to add values automatically in between lines, if I select two extreme lines (contour is varying by an interval of 1 unit) or is it possible to create a GUI like that, or can I program like that in QGIS?
I'm new to this.
I'm adding my contour values to the "id" table.
Is there any way to program for this in pyqgis or any other way to do it?