## LaTeX forum ⇒ Graphics, Figures & Tables ⇒ Tikz | Simple flow chart

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bkarpuz
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Joined: Thu Dec 18, 2008 4:53 pm
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### Tikz | Simple flow chart

Dear LC members,

I have a flow chart which consists of a parallelogram, a rectangle, a diamond and a trapezoid as attached. I tried myself but could not get any successful results and I couldn't combine with No line Query and Operations box. I would really appreciate your help on giving me a flow chart sample.

Thank you very much.
bkarpuz
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FlowChart.JPG (11.26 KiB) Viewed 5281 times

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Stefan Kottwitz
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Hello,

bkarpuz wrote:I tried myself but could not get any successful results

what did you try? Perhaps we can continue that instead that reader start from scratch.

bkarpuz wrote:I couldn't combine with No line Query and Operations box.

It should be no problem. Once we see your code I guess we are able to show how to do the connection.

Stefan

bkarpuz
Posts: 124
Joined: Thu Dec 18, 2008 4:53 pm
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Stefan_K wrote:Hello,

bkarpuz wrote:I tried myself but could not get any successful results

what did you try? Perhaps we can continue that instead that reader start from scratch.

bkarpuz wrote:I couldn't combine with No line Query and Operations box.

It should be no problem. Once we see your code I guess we are able to show how to do the connection.

Stefan

Thank you Stefan_K.
Here is my code.
\documentclass{article} \usepackage{tikz} \usetikzlibrary{shapes,arrows,shapes.multipart} \begin{document} \tikzset{startend/.style = {draw, circle},input/.style = {draw, trapezium, trapezium left angle=70, trapezium right angle=-70, minimum height=4em},print/.style = {draw, trapezium, trapezium left angle=-70, trapezium right angle=-70, minimum height=4em},operation/.style = {rectangle, draw, text width=17em, text centered, minimum height=4em},question/.style = {diamond, draw, text width=8em, text centered, inner sep=0pt},line/.style = {draw, -latex'}} \begin{tikzpicture}[node distance = 3cm, auto]     \node [startend] (start) {Start};     \node [input, below of=start] (input) {$h,n_{0},x_{0},y_{0}$};     \node [operation, below of=input] (operationa) {$n=0$};     \node [operation, below of=operationa] (operationb) {$n=n+1$\\ $x_{n}=x_{n-1}+h$\\ $y_{n}=y_{n-1}+hf(x_{n-1},y_{n-1})$};     \node [question, below of=operationb] (question) {$x_{n}\geq{}x_{0}+n_{0}h$};     \node [print, below of=question] (print) {$x_{0},y_{0}$};     \node [startend, below of=print] (end) {End};      \path [line] (start) -- (input);     \path [line] (input) -- (operationa);     \path [line] (operationa) -- (operationb);     \path [line] (operationb) -- (question);     \path [line] (question) -- node {No} (operationb);     \path [line] (question) -- node {Yes} (print);     \path [line] (print) -- (end);\end{tikzpicture} \end{document}

This one also looks as the distance between the elements are not spaced good.

Thank you.
bkarpuz

Stefan Kottwitz
Posts: 8253
Joined: Mon Mar 10, 2008 9:44 pm
Location: Hamburg, Germany
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I guess the spacing is between the anchors / centers of the nodes, and they have a different height. You could specify an yshift value, or use relative positioning such as below =4cm of nodename.

The missing path can be done like

\path [line] (question) -- ++(-4,0) |- (operationb);

which means going 4 to the left and connecting to operationb horizontally and then vertically.

flowchart.png (5.14 KiB) Viewed 5274 times

Stefan

bkarpuz
Posts: 124
Joined: Thu Dec 18, 2008 4:53 pm
Contact:
Stefan_K wrote:The missing path can be done like
\path [line] (question) -- ++(-4,0) |- (operationb);

which means going 4 to the left and connecting to operationb horizontally and then vertically.

Thank you Stefan_K, I have modified it as follows for my purpose
\path [line] (question) -- node {No} ++(-4,0) |- (operationb);

On the other hand, why there letters are scattered in the equation $n=n+1$ and the others? How can I make them look like as in the mathematical text.
Also it is possible to edit the lines so that I adjust manually the distance between each object?

Thanks once more.
bkarpuz
Last edited by bkarpuz on Fri Dec 21, 2012 7:51 am, edited 1 time in total.

bkarpuz
Posts: 124
Joined: Thu Dec 18, 2008 4:53 pm
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Stefan_K wrote:You could specify an yshift value, or use relative positioning such as below =4cm of nodename.

The following line does not compile.
    \node [input] (input) {$h,n_{0},t_{0},y_{0}$};     \node [operation, below=2cm of input] (operationa) {$n=0$};

What is the problem with this line?

Thank you.
bkarpuz

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