I need to produce something similar to this with latex enter image description here

I am not familiar at all with the tikz package. However I was able to find a code that I think could be adapted to fit with my needs:

   \draw (0,0) circle (2cm);
   \draw (3,-1) circle (2.5cm);
   \draw (0,0) node {A};
   \draw (3.2,-1) node {B};
   \draw [clip](0,0) circle (2cm);
   \fill[yellow] (3,-1) circle (2.5cm);

It produces this figure: enter image description here

Does anybody have an idea of how I could adapt the above code to get what I want?

Thanks for your help.

  • The source code was found at latex-community.org/forum/viewtopic.php?f=45&t=9937
    – JaneDoe
    May 31 '16 at 11:38
  • Welcome to TeX.SX!! It is better to post a full minimal working example. It's better to include the full code in he question rather than posting a link. A LaTeX MWE should start with a \documentclass command, have a minimal preamble and then \begin{document}...\end{document}. The code should compile and be as small as possible to demonstrate your problem. This makes it much easier for people to help you --- and much more likely that they will!
    – user30471
    May 31 '16 at 12:15

No need to clip; you can use fill opacity. Start with:

    \draw [fill=cyan, fill opacity=0.5] (0,0) circle (2cm);
    \draw [fill=orange, fill opacity=0.5] (3,-1) circle (2.5cm);

composing opacities

and the rest of the thing is a bit of geometry and maybe the intersections library:

    \draw [fill=cyan, fill opacity=0.5, name path=c1] (0,0) circle (2cm);
    \draw [fill=orange, fill opacity=0.5, name path=c2] (3,-1) circle (2.5cm);
    \draw (0,0) ++(120:2cm) -- ++(120:2.2cm) node [fill=white,inner sep=5pt](a){a};
    \draw (3, -1) ++(30:2.5cm) -- ++(30:2.6cm) node [fill=white,inner sep=5pt](b){b};
    \path [name intersections={of=c1 and c2,by=cs}];
    \draw (cs) -- ++(.5,1) node [fill=white,inner sep=5pt](c){c};

with labels

...I leave the rectangles in the legend as an exercise.

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