清空筛选条件
清空筛选条件

Accessing a value in a vector from a conditional statement

2 次查看（过去 30 天）
Frank Lehmann
Frank Lehmann 2020-7-5
评论： Frank Lehmann 2020-7-5
Hi All,
Im trying to access a vlue in the middle of my vector as per below. From my mv value of 13.073 i should receive the value of 25 from the vector, ie next highest from mv. I would like to get both the value and index
v=[6 10 25 35 50 65 80]
x=10.02
y=10.47
mv=max(x*.125,y*1.25)
for k=1:length(v)
if v(k)>mv
mv=v(k)
ind=k
end
end
Thanks,
Everyone

请先登录，再回答此问题。

回答（2 个）

Star Strider
Star Strider 2020-7-5
There are several ways to do this.
My approach:
v=[6 10 25 35 50 65 80];
x=10.02;
y=10.47;
mv=max(x*.125,y*1.25);
ind = interp1(v,(1:numel(v)), mv, 'next')
Out = v(ind)
producing:
ind =
3
Out =
25
I prefer not to overwrite existing variables, so I have the output as ‘Out’.
.
Image Analyst
Image Analyst 2020-7-5
Use find():
v=[6 10 25 35 50 65 80]
x=10.02
y=10.47
mv=max(x*.125,y*1.25)
[~, index] = find(v >= mv, 1, 'first')
value = v(index)
index =
3
value =
25
  1 个评论
Frank Lehmann
Frank Lehmann 2020-7-5
Thanks guys much appreciated it also helps having a few different solutions to keep in mind next time.

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Operators and Elementary Operations 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