Take the 2-minute tour ×
TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. It's 100% free, no registration required.

I'm trying to redraw the diagram diagram below. I'm using it as an exemplar/reference in a document I am writing but I need it to be clearer hence the redraw.


I tried and failed to draw it in Inkscape. After thinking about it for a while though, I thought actually it could be done (and perhaps better) mathematically using something like Tikz. I've looked through the questions here and I can find similar but not what I need.

So far, my code is a just a pathetic cloud and an oval and missing the crucial 2D spiral cone:



\node [cloud, draw,cloud puffs=10,cloud puff arc=120, aspect=2, inner ysep=1em,text width=1cm]{Needs\\and\\Ideas};
\draw  (0,-10) ellipse (4 and 2);
share|improve this question

1 Answer 1

You can use (point a) to [in=degree,out=degree,looseness=value] to draw bent lines. I used two sets of those, computing the coordinates in a loop. Afterwards, another loop is used to set the descriptions. This answer uses Caramdir's solution to this question.



\foreach \x in {1,...,7}
{   \draw[decoration={markings, mark=at position 0.8+\x/60 with {\arrow{latex}}},postaction=decorate] (1+\x/5,-1-\x) to [out=90,in=90,looseness=0.5] (-1-\x/5,-1-\x) node[xshift=-0.05cm] (gate-\x) {\footnotesize stage gate};
    \draw (1+\x/5,-1-\x) to [out=270,in=270,looseness=0.5] (-0.8-\x/5,-\x);
\foreach \gate [count=\c] in {asdf,sdfg sdfg,dfgh dfgh dfgh,fghj fghj,ghjk,hjkl hjkl hjkl,TeX TeX TeX TeX}
{ \node[text width=2cm, align=right,left=1cm] at (gate-\c) {\gate};
\draw (-2.4,-8) to [out=270, in =120] (-1.5,-9);

\node [cloud, draw,cloud puffs=10,cloud puff arc=120, aspect=2, inner ysep=1em,text width=1cm,fill=white]{Needs\\and\\Ideas};
\draw[fill=white]  (0,-10) ellipse (4 and 2);


enter image description here

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.