Why do the drawn lines in my figure look thin and not smooth curved lines? In this link you will see the first figure (my figure) and in the second one is the target (just black and white, thicker lines and smooth drawing lines): http://speedy.sh/zaK8p/test.docx
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I would suggest plotting with no marker specified, with the default line stype ('-') and perhaps with a LineWidth given. LineWidth is in points and the default is 1/2 point.
The graph you showed appeared to either have markers or to be using '--.' line style.
Try adding this option to whatever function (plot, contour, etc.) you used to plot the curves:
..... 'LineWidth', 3, ........
That should thicken them up. LineWidth is a common option used by a bunch of functions.
Your plot (the top colored one) looks fine to me. I don't see broken line like Walter. Tell me what "the target" is and why it apparently rasterizes the plot and loses the colors. Because of the rasterization/quantization/digitization/sampling (whatever you want to call it) and the apparent anti-aliasing being done along with that, it gives a choppy appearance to the curves on the bottom plot on "the target" (whatever that is).
Inthe future, just upload a screenshot directly: http://www.mathworks.com/matlabcentral/answers/7924-where-can-i-upload-images-and-files-for-use-on-matlab-answers