GMT.jl makecpt error: Need at least two nodes to form a CPT slice

Q&A GMT.jl Q&A
1

Would anyone please help me check what I did wrong with my makecpt syntax?

Syntax:
topo = makecpt(cmap=:jet, range=(0,0.02,10) )

Error:

makecpt [ERROR]: **Need at least two nodes to form a CPT slice, your choice only resulted in 1 nodes**

**ERROR:** LoadError: Something went wrong when calling the module. GMT error number = 79.
2

tagging @Joaquim

3

From the manual

image
image1994×284 53.7 KB

So if third arg in range is meant to be the number of intervals between 0 and 0.02, do

topo = makecpt(cmap=:jet, range=(0,0.02,11,:number) );

1 Like
4

Many thanks! That was the problem.

I assumed that the interval should be in the middle, without realizing that GMT wants it to be at the end.