I plotted a graph from data I got from simulations, however the challenge I am having is that some data points are on the Y and X axis. I have tried using Log & semilogx but its giving me -ve values. I need +ve values. How can I resolve this pls?
1 回表示 (過去 30 日間)
古いコメントを表示
I plotted a graph from data I got from simulations, however the challenge I am having is that some data points are on the Y and X axis. I have tried using Log scale & semilogx but its giving me -ve values. I am working on flow rates hence I need to have positive values for flow rates not negative.
0 件のコメント
回答 (1 件)
Dimitris Iliou
2017 年 6 月 15 日
Since you have data that I am assuming are expressed geometrically, you might have to use a logarithmic scale.
A negative value on the logarithmic scale does not mean that the value is negative.
For example,
log(0.001)
ans =
-6.9078
Since you mentioned that you have data on (or close to) the X,Y axis, I think it is natural to encounter negative numbers since you would have to use a logarithmic scale.
0 件のコメント
参考
カテゴリ
Help Center および File Exchange で Log Plots についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!