Polarity

This applet generates polarity cartoons. What on earth is a polarity cartoon? Read this blog post.

Use the form below to make a quick cartoon (right-click > copy image), or scroll down to read about the API.

Use the API

Quick URL for PNGs:

https://app.scienxlab.org/polarity.png

There's a different endpoint for SVGs:

https://app.scienxlab.org/polarity.svg

Example URL with the default values:

https://app.scienxlab.org/polarity.png?layer=hard&polarity=normal&freq=med&phase=0&style=vd&cmap=RdBu

The parameters (defaults in bold):

• layer — kind of layer in the earth model — hard or soft.
• polarity — normal (US, SEG) or reverse (European) polarity — normal or reverse.
• freq — the frequency of the wavelet used — lo, med, hi, or vhi. Spellings 'low' and 'high' are allowed.
• phase — the phase of the wavelet used — integer, degrees, default 0.
• style — variable density synthetic or simple ramp — syn or ramp.
• cmap — with the exception of the custom petrel colourmap, only matplotlib colourmaps are allowed, see matplotlib help. E.g. RdBu, RdGy, seismic, gray or seismic. You can reverse any colourmap by appending _r, e.g. gray_r.

Get the code

You can get the code here. The script has a command line interface, or use it as a module in your own code.

About this app

The cartoons are matplotlib plots generated by a Python Flask web app.

Images generated by this tool are free from copyright. Do whatever you like with them.