Convert cpt file to svg file

Q&A
,
1

Hello all
How can I convert cpt file to svg file

2

Cpt are just a list of numbers to be interpreted as colours.
SVG is a 2D picture…
Do you have an example of what you want to achieve?

3

SVG is also a format for cpt. Check this link

I don’t know how to convert the format. I would check on cptcity if exits or do it manually.

4

A quick web search turned up cptsvg which, according to the man page, “convert[s] GMT colour palette tables (cpt) to SVG gradients”

5

Oooh

SVGs are written in XML code

That’s how… got it

6

Here there is online version

7

And what do we do with that SVG image other than display it?

8

Just to clarify, SVG has a colour gradient element, which looks like

<linearGradient id="Blues_03" gradientUnits="objectBoundingBox" spreadMethod="pad" x1="0%" x2="100%" y1="0%" y2="0%">
  <stop offset="0.00%" stop-color="rgb(222,235,247)" stop-opacity="1.0000"/>
  <stop offset="33.33%" stop-color="rgb(222,235,247)" stop-opacity="1.0000"/>
  <stop offset="33.33%" stop-color="rgb(158,202,225)" stop-opacity="1.0000"/>
  <stop offset="66.67%" stop-color="rgb(158,202,225)" stop-opacity="1.0000"/>
  <stop offset="66.67%" stop-color="rgb(49,130,189)" stop-opacity="1.0000"/>
  <stop offset="100.00%" stop-color="rgb(49,130,189)" stop-opacity="1.0000"/>
</linearGradient>

the cptsvg program converts cpt to that format, and that can be accessed from cptutils-online site as mentioned above.