matrix coordinate to cartesians matrix

how can I do a cartesian plot if I get matrix coordenates, or how can change the origin in a plot?

Answer 1

[Walter Roberson]

See this question, asked by someone with a quite similar name to yours: http://www.mathworks.co.uk/matlabcentral/answers/46816-convert-matrix-coordenates-at-cartesian-coordenate