# Graphical output problem when using ParametricPlot [closed]

I'm currently trying to see the impact of one parameter on an equation.

To do so, I plot the results of my equation following against a range of values for this parameter by using ParametricPlot.

The plot is really skewed and practically impossible to read. All other plots that I do are working on my Mathematica, and even if I reset my workspace, the problem persists. I guess this come from something pretty dumb, but I can't see what. Any idea ?

Here is my code:

Umax = 10000000;
i2 = 0.0000001;
ParametricPlot[{((i2*Umax)/u2), u2}, {u2, 0.01, 1}]


And here is the resulting plot (I enlarged it to the max):

Isn't the plot supposed to have its x-axis and y-axis automatically balanced ?

Thanks a lot !

• I feel a little dumb asking this question. If the answer is obvious and relative to a pretty dumb human error, please tell me if I should delete this question. Thanks again. – Jerobou Mar 21 '19 at 17:16
• I believe you are looking for AspectRatio. Try, for instance, ParametricPlot[{i2*Umax/u2, u2}, {u2, 0.01, 1}, PlotRange -> All, AspectRatio -> 1/GoldenRatio], which is the default aspect ratio utilized e.g. by Plot. Adding PlotRange -> All is also a good idea to avoid truncation in your horizontal axis. – MarcoB Mar 21 '19 at 17:17
• This is working perfectly. Thanks a lot. Could you please write it as an answer (if you feel this question should be answered) so I can accept it as a valid one? thanks again. – Jerobou Mar 21 '19 at 17:20
• Sure, I've added it. This question is still likely to be closed as "off topic" because the solution is in the docs. Indeed, I have voted to close as well. I just wanted to make sure that you know that it is not a judgment on the quality of the question, which I have voted up because it was well written and it contained all info to answer it, but simply a "housekeeping" move. – MarcoB Mar 21 '19 at 17:25
• @MarcoB Anyhow, almost everything is in the docs somewhere, but this counterintuitive behavior isn't mentioned in the logical place (ParametricPlot - Possible Issues), so there's no need for OP to feel bad for asking! – Chris K Mar 21 '19 at 19:15

As requested, I believe you are looking for AspectRatio.

Try, for instance,

ParametricPlot[
{i2*Umax/u2, u2}, {u2, 0.01, 1},
PlotRange -> All,
AspectRatio -> 1/GoldenRatio
]


1/GoldenRatio happens to be the default aspect ratio utilized e.g. by Plot. Adding PlotRange -> All is also a good idea here to avoid truncation in your horizontal axis.

• Perfect, thanks a lot ! – Jerobou Mar 21 '19 at 17:30
• @Jerobou No problem, glad to help! – MarcoB Mar 21 '19 at 17:30