您正在关注此问题

您将在关注的内容源中看到更新。
您可能会收到电子邮件，具体取决于您的通信预设项。

how to detect and measure Gaussian peaks ?

3 次查看（过去 30 天）

显示更早的评论

khushboo chhikara 2018-4-28

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks

⋮

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks

评论： Walter Roberson 2018-4-30

14 - sampleMap.xls

在 MATLAB Online 中打开

filename='14 - sampleMap.xlsx';
[num,txt,raw] = xlsread(filename);
[nx,ny] = size(num) ;
[X,Y] = meshgrid(1:nx,1:ny) ;
% pcolor(X,Y,num)
% mesh(X,Y,num) ;
% shading interp 
a=findpeaks(X,Y)

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Walter Roberson 2018-4-30

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562713

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562713

Please do not close questions that have an answer

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Ameer Hamza 2018-4-28

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#answer_317651

⋮

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#answer_317651

在 MATLAB Online 中打开

To find peaks in a 3D mesh you can use imregionalmax(). In your case

locationMax = find(imregionalmax(num));
maxValue = num(locationMax);

13 个评论
显示 11更早的评论隐藏 11更早的评论

khushboo chhikara 2018-4-28

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562033

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562033

and how to plot it ?

Ameer Hamza 2018-4-28

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562036

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562036

在 MATLAB Online 中打开

surf(x,y,z);
hold on
plot3(x(locationMax), y(locationMax), z(locationMax), 'r+', 'MarkerSize', 15, 'LineWidth', 10)

khushboo chhikara 2018-4-28

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562037

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562037

在 MATLAB Online 中打开

filename='14 - sampleMap.xlsx';
[num,txt,raw] = xlsread(filename);
[nx,ny] = size(num) ;
[X,Y] = meshgrid(1:nx,1:ny) ;
% pcolor(X,Y,num)
% mesh(X,Y,num) ;
% shading interp 
% a=findpeaks(X,Y)
locationMax = find(imregionalmax(num));
maxValue = num(locationMax);
surf(x,y,z);
hold on
plot3(x(locationMax), y(locationMax), z(locationMax), 'r+', 'MarkerSize', 15, 'LineWidth', 10)

| can we do this in 2-D for whole data after reading the excel file??|

Ameer Hamza 2018-4-28

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562049

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562049

What do you mean by 2D? This code will read excel file and make a surf plot. And draw a marker at the maximum point.

khushboo chhikara 2018-4-28

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562052

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562052

i want that this code will read the excel file and than detect amd measure gausian peaks and plot them in 2D.

Ameer Hamza 2018-4-28

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562059

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562059

在 MATLAB Online 中打开

Are you looking for something like this

figure
contourf(x,y,z, 30);
hold on
plot(x(locationMax), y(locationMax), 'r+', 'MarkerSize', 15, 'LineWidth', 10)

khushboo chhikara 2018-4-28

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562060

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562060

https://terpconnect.umd.edu/~toh/spectrum/PeakFindingandMeasurement.htm

this but using excel sheet.

Ameer Hamza 2018-4-28

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562064

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562064

The link you shared contain 1D signal. Your excel file contains 2D signal. These are two different types of signal.

khushboo chhikara 2018-4-28

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562067

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562067

yes ! i want these kind off peaks for my data.

Ameer Hamza 2018-4-28

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562088

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562088

Your data set is 2D. Can you show an example, where 2D dataset is used to make such plot?

khushboo chhikara 2018-4-28

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562090

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562090

No ! thats why i am asking for help ? Is it possible to do it in 2D ?

Ameer Hamza 2018-4-28

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562093

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562093

Watching your excel sheet, it appears that the best way to show the data is through drawing a surface plot over a mesh.

Ameer Hamza 2018-4-28

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562126

⋮

链接

此评论的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/397888-how-to-detect-and-measure-gaussian-peaks#comment_562126

@khushboo's answer moved here

"Ok .. means the coding done so far is correct ?"

If the graphs look fine for your purpose, it is correct.

请先登录，再进行评论。

请先登录，再回答此问题。

另请参阅

类别

MATLAB Graphics Formatting and Annotation Labels and Annotations Annotations

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

Community Treasure Hunt

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

Start Hunting!

发生错误

由于页面发生更改，无法完成操作。请重新加载页面以查看其更新后的状态。

Translated by

选择网站

选择网站以获取翻译的可用内容，以及查看当地活动和优惠。根据您的位置，我们建议您选择：。

(English)
(Deutsch)
(Français)

（简体中文）
(English)

您也可以从以下列表中选择网站：

如何获得最佳网站性能

选择中国网站（中文或英文）以获得最佳网站性能。其他 MathWorks 国家/地区网站并未针对您所在位置的访问进行优化。

美洲

América Latina (Español)
Canada (English)
United States (English)

欧洲

Belgium (English)
Denmark (English)
Deutschland (Deutsch)
España (Español)
Finland (English)
France (Français)
Ireland (English)
Italia (Italiano)
Luxembourg (English)

Netherlands (English)
Norway (English)
Österreich (Deutsch)
Portugal (English)
Sweden (English)
Switzerland
United Kingdom (English)

亚太

Australia (English)
India (English)
New Zealand (English)
中国
- 简体中文Chinese
- English
日本Japanese (日本語)
한국Korean (한국어)

联系您当地的办事处

how to detect and measure Gaussian peaks ?

1 个评论 显示 -1更早的评论隐藏 -1更早的评论

回答（1 个）

13 个评论 显示 11更早的评论隐藏 11更早的评论

另请参阅

类别

标签

Community Treasure Hunt

WeChat

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

13 个评论
显示 11更早的评论隐藏 11更早的评论