How do I put this formula int matlab?
1 次查看(过去 30 天)
显示 更早的评论
z=imread('C:\Users\*****\Desktop\Matlab\Homework 3-02 03 04 05\Fig308a.jpg');
for i=1:255
y(i)=sum(z(:) == i);
end
n=488*373;
for j=1:255
s(j)=symsum(y(k)/n, k, 1, j); %% Talking about this part.
end
bar(y), figure, imhist(z), figure, bar(s)
Long story short, what I want to get is such that:
s(1)=y(1)/n
s(2)=y(1)/n+y(2)/n
...
I get the error saying:
"Invalid indexing or function definition. Indexing must follow MATLAB indexing. Function arguments
must be symbolic variables, and function body must be sym expression."
![Ekran Alıntısı.PNG](https://www.mathworks.com/matlabcentral/answers/uploaded_files/209783/Ekran%20Al%C4%B1nt%C4%B1s%C4%B1.png)
What should i use?
2 个评论
madhan ravi
2019-3-22
编辑:madhan ravi
2019-3-22
I am not able to interpret your formula but if the concept is this
s(1)=y(1)/n
s(2)=y(1)/n+y(2)/n
... then why not
cumsum(y/n) % ?
[comment moved to answer section]
采纳的回答
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Number Theory 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!