Draw lines, etc. on a rasterized (bitmap) graphic

[Swamp Thing]

How can we add lines, text etc onto a bitmap image (for example one created via Rasterize[] ), using Mathematica commands?

At the moment my use case is that I want to ListPlot[] a graph that has about a million plus line segments. My free WolframCloud account runs into memory limits when storing the array and building the ListPlot. Instead, I'd like to loop through some code that will draw the line segments onto a canvas like object so that it doesn't have to hold all the numeric data at one time.

 

[Evalesco]

You can use the DrawGraphics[] command to draw lines and text onto a bitmap image. You can specify the coordinates and the line color, width, type (solid, dashed, etc.). To add text, you can use the TextString[] command, which takes the string of text to be displayed and the coordinates of where to display it.