清空筛选条件
清空筛选条件

How to use a floating point number in max() function?

3 次查看（过去 30 天）
Dominic
Dominic 2017-8-13
回答： Stephen23 2017-8-13
Hi, I am trying to find a maximum number that is a float number using max().
allWidths = bb(3:4:end);
allHeights = bb(4:4:end);
aspectRatio = [allWidths./allHeights ; allHeights ./ allWidths];
aspectRatios = max(aspectRatio, [], 0.5);
but the line
aspectRatios = max(aspectRatio, [], 0.5);
shows an error. How could I use a floating point number to find the maximum value??
  2 个评论
Stephen23
Stephen23 2017-8-13
编辑：Stephen23 2017-8-13
max(aspectRatio, [], 0.5);
What is the 0.5-th dimension of an array?
Why not simply:
max(aspectRatio)
Dominic
Dominic 2017-8-13
No. Actually I have some blobs in a binary image and have calculated aspect ratios. Now I want to keep only those who have aspect ratios from 0.5 to 1.5.
0.5 is the lowest value that i want to set first in the variable aspectRatios and after that i have applied another condition to set maximum value 1.5 by following statement.
keeperIndexes = find(aspectRatios < 1.5);
but i am unable to set 0.5 in lowest. if there is a simple way to keep those blob in the binary image that has aspect ratio from 0.5 to 1.5 please share.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Stephen23
Stephen23 2017-8-13
aspectRatio = allWidths./allHeights;
idx = aspectRatio>0.5 & aspectRatio<1.5;
find is likely not required, as logical indexing is simpler and more efficient.

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Object Detection 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