I have an .jpeg image of a graph. I have extracted the x,y coordinates of the black curve usng pixel intensity and would like to recreate the original graph as a matlab plot to extract data. I am not using any digitizer prebuilt functions because I dont want to manually click on the points in the curve to extract data. So my idea is to plot the x,y cooridnates of the black pixel graph as a plot with the origin x and y axis scale and get the data from it. Now I need help to understand how I can plot the x,y coordinates extracted from image to recreate the curve exactly as below? Any better ideas are also appreciated. Thank you!