清空筛选条件
清空筛选条件

Multiplying unequal length vectors

2 次查看（过去 30 天）
Kim
Kim 2013-11-13
编辑： Sean de Wolski 2013-11-13
I'm continuing in my Mathcad to Matlab translation of good radar equations. Now I need to work the following equation: e2(theta) = E2 * f(theta)*exp(i*phi);
The problem is f(theta) is 351 elements long and 'i' and 'phi' are only 5 elements long each.
In fortran, I'd try up sampling i and phi through interpolation, but was wondering if there is a better Matlab solution.
  1 个评论
Matt J
Matt J 2013-11-13
So phi is a function of theta? If it is a known function of theta (even an implicit one), you could use that function to generate more phi samples.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Sean de Wolski
Sean de Wolski 2013-11-13
编辑：Sean de Wolski 2013-11-13
Well what do you want to do? Do you want to multiply f(theta) by every element of phi?
If so:
exp(ii.*phi)'*(1:351)
Will give you a 5x351 matrix that has this. Otherwise, please be more clear in your goal. If you want to make exp(ii.*phi) to be the same size as a 1x351, this will inevitably involve interpolation.
More per clarification
Use interp1 to interpolate between the values you need.
doc interp1 %for more info
Kim
Kim 2013-11-13
Sorry bout the poor question.
Yes, I want exp(i.*phi) to be 1X351, so that I can do: e2(theta) = E2 * f(theta).*exp(i.*phi);

类别

在 Help Center 和 File Exchange 中查找有关 NaNs 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