You can't see where each pixel's area is in a blank image(). This is especially bad when there's a large number of pixels. An overlaid grid, which can be subtle, will help. This could be an argument like grid = TRUE.
In other words, abline(). The h and v positions will have to be calculated given the n_row and n_col, as per the calculations that take place to match the x and y of a point click to the nearest pixel.
You can't see where each pixel's area is in a blank
image(). This is especially bad when there's a large number of pixels. An overlaid grid, which can be subtle, will help. This could be an argument likegrid = TRUE.In other words,
abline(). Thehandvpositions will have to be calculated given then_rowandn_col, as per the calculations that take place to match the x and y of a point click to the nearest pixel.I implemented this sort of functionality in my pixel art blog post.