Hi everyone, I am currently using ‘sunpy.map’ to analysing LOFAR tied array image. After I generated a map from a LOFAR tied array dataset, I create a composite map to overplot the LOFAR and the AIA images. The composite map is called ‘my_map’
I learned that I can use ‘my_maps.set_levels(1, [75], percent=True)’ to generate contours directly. However, I found contours are too thin and dark to see right now, and I don’t know how to change the linewidth and the colour.
Another question: if there is a way to plot the centroid of the contour?
I would recommend not using a composite map to do this, but instead keeping two different sunpy maps (an AIA one, and a LOFAR one). There is an example of drawing contours here: Overplotting HMI Contours on an AIA Image — SunPy 3.0.1 documentation - hopefully that does what you want, and you can customise the contours using arguments to the draw_contours call.
For plotting the centroid have you calculated the centroid already and just want to plot it, or do you need to calculate the centroid too?