Create a gradient interpolated surface with few latitude and longitude coordinates

Hello everyone,

So I have some latitude coordinates [21.7635 21.7549 21.7462 21.7355 21.7233 21.7181 21.7096 21.7070]

and longitude coordinates [39.1366 39.1315 39.1286 39.1172 39.1133 39.0988 39.0951 39.0891] with corresponding temepratures [28.5746 28.7729 28.7079 28.6717 28.6379 28.6529 28.7192 28.6996].

I'm able to plot these as point marks on a map using geoshow with custom shape file and plotm functions.

What I need is to use these point values to create a gradient surface so it appears as a shaded fill inside the land area of the shape layer. I attached as an image what I currently get, and the second image sort of what I need to get.

Answer 1

[darova]

First of all you have to decide how to interpolate your data. Look at the image

If color normals of a curve

Define color of temperature (You have a few colors fo the same temperature).

[wise_boss]

Thank you. I'm fine with any kind of interpolation as long as it's a gradient fill. Can you please let me know if you colored it manually or by code?

I need help coding an interplated surface or matrix based on these eight points.

[darova]

Im sure there is more simple way to create gradient mesh/surface

See attached files

[wise_boss]

I really appreciate that you put in time to code specifically for my problem. This works for me and I'm really grateful for it. So I assume the filled area appears clear as more lines are drawn in the spline direction?

[darova]

yes. You are welcome