How to integrate using trapz function

13 次查看（过去 30 天）
shagun chaudhary
shagun chaudhary 2022-8-31
评论： Bjorn Gustavsson 2022-8-31
Hi I am using trapz to get my answer. but i am getting 0 which is not the answer. I have attched my data where Y reprsesnt loads (mg/hr) and x represents time in a number form . Please i will extremely graeful if somebody can help.
Int=trapz(X1,Y);

请先登录，再回答此问题。

采纳的回答

Bjorn Gustavsson
Bjorn Gustavsson 2022-8-31
The variable in X1 seems awfully constant, at 0.0166. The first input to trapz should be the x-coordinate of the points at which you have Y, not the values of "dx". Perhaps what you want is something like:
Ival = trapz(cumsum(X1),Y);
HTH
  4 个评论
显示 2更早的评论
shagun chaudhary
shagun chaudhary 2022-8-31
How to get Trapz for all 56 combination. This is what ineed. Thanks
Bjorn Gustavsson
Bjorn Gustavsson 2022-8-31
If you look at the help for trapz you will read:
Z = trapz(X,Y,DIM) or trapz(Y,DIM) integrates across dimension DIM
of Y. The length of X must be the same as size(Y,DIM)).
That means that your call to trapz would be something like:
z_all = trapz(cumsum(X1),Y,2);

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Numerical Integration and Differentiation 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by