How do I pad with zeros?

4 次查看（过去 30 天）
Ryan
Ryan 2021-5-18
编辑： Cris LaPierre 2021-5-18
Rather than extracting the last row from the top and bottom of X_proj_corrected, I want to add 100 rows of zeros to either the top or bottom of X_proj_corrected using padarray function?
%Extract last row from X_proj_corrected sinogram from top and bottom
X_proj_corrected_padded100 = [X_proj_corrected(1,:); X_proj_corrected];
X_proj_corrected_padded100 = [X_proj_corrected; X_proj_corrected (size(X_proj_corrected,1),:)];
%Using last row from top and bottom 100 rows padded top and bottom using IPT
X_proj_corrected_padded100 = padarray(X_proj_corrected,100,'replicate','both');
figure
imagesc(X_proj_corrected_padded100)
  2 个评论
David Hill
David Hill 2021-5-18
Hard to understand your description. Please provide a simple example of what you want to do. It should be quite easy.
Ryan
Ryan 2021-5-18
Hi David, rather than extracting the last row from the top and bottom of X_proj_corrected, I want to add 100 rows of zeros to either the top or bottom of X_proj_corrected using padarray function? Thanks.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Cris LaPierre
Cris LaPierre 2021-5-18
编辑：Cris LaPierre 2021-5-18
To pad with 100 rows of zeros, do the following
% to add to the top
X_proj_corrected = padarray(X_proj_corrected,100,'pre');
% to add to the bottom
X_proj_corrected = padarray(X_proj_corrected,100,'post');

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Interpolation 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by