Specify Path for Image in Report Generator

Question

Matt O'Brien 2022-11-25

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1863093-specify-path-for-image-in-report-generator

编辑： Stephen23 2022-11-25

I have a pdf generated via MatLab Report Generator. I have a few remaining issues. I have spent days trying to resolve via search of this and other forums.

I am posting each issue individually.

This issue. Specify Path for Image in Report Generator

The following line is used in an Example Report. This works and finds the image in the local directory or in a directory via the addpath function.

img1 = Image(which('ngc6543a.jpg'));

Unfortunately, I will be supplied an Excel sheet which will supply a list of images with the full image path. There may be hundreds of images and directories in the list (and the database has more than 500,000 images). I am comfortable splitting the path and filename into different variables.

Simplified file list:

'C:\Dir1\ngc6543a.jpg'

'G:\Dir2\ngc6543a.jpg'

'S:\Dir1\SubDir\ngc6543a.jpg'

When I tried the following I always get an error.

img1 = Image(which('C:\Dir1\ngc6543a.jpg'));

Please help me use the correct syntax to include the full path, eg. 'C:\Dir1\ngc6543a.jpg'.

I do not believe it is feasible to keep adding the image 'path' to the system addpath function for such high volumes.

Also... if anyone could please post a link to the Image(which)) syntax. I cannot find it.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Stephen23 2022-11-25

编辑：Stephen23 2022-11-25

在 MATLAB Online 中打开

"Please help me use the correct syntax to include the full path, eg. 'C:\Dir1\ngc6543a.jpg'."

img1 = Image('C:\Dir1\ngc6543a.jpg'); % get rid of WHICH()

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Image Analyst 2022-11-25

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1863093-specify-path-for-image-in-report-generator#answer_1111843

在 MATLAB Online 中打开

I don't know what "Image" is. Is that your own function or a special function for the Report Generator? It's not the built-in image function because MATLAB is case sensitive.

And what's the point of using which()?

Since you already seem to have the filenames in a cell array or table because you read them in from Excel, why not simply use the index of the one you want?

[numbers, fileNames, raw] = xlsread(workbookName);
img1 = Image(fileNames{3}); % Use filename #3.

12 个评论
显示 10更早的评论隐藏 10更早的评论

Matt O'Brien 2022-11-25

编辑：Matt O'Brien 2022-11-25

I am comfortable extracting path and filename components from Excel or any other source.

What I struggle with is that the following line is an example supplied by Matlab and I can only assume Image and which() are functions available via the Report Generator extensions / object model.

img1 = Image(which('ngc6543a.jpg'));

This line works when the image is in the local directory, but does not work when I try to use the full path.

Also.... I cannot find any documentation for Image or Which.

Here is a link to the worked example, placing 2 images on a pdf page..

https://uk.mathworks.com/help/rptgen/ug/side-by-side-images.html

I can see the potential of MatLab Report Generator .... but it is challlenging for me to get my prototype working. I have it now 99% there ... but the inability for me to include an image without first having to move it to the local folder, or add hundreds of paths to the default paths parameter, is a major limitation of adopting Report Generator more extensively.

Stephen23 2022-11-25

编辑：Stephen23 2022-11-25

"I get this error message."

Why are you calling WHICH with a full path? The entire point of WHICH is to return the path of something that:

is not a full path, and
is on the MATLAB search path (the WHICH documentation makes this very clear: "If item is a file name including the extension, and it is in the current working folder or on the MATLAB path, then which displays the full path of item.")

If you already have the full path of something that is not on the MATLAB search path, then WHICH does absolutely nothing for you. Image Analyst pointed this out six hours ago, so it is unclear why you are still calling WHICH.

Get rid of WHICH.

"I can only assume Image and which() are functions available via the Report Generator extensions / object model."

Rather than assuming, finding the Image documentation took me ... eight seconds: I clicked on the link you posted, then clicked on "Functions" at the top of the page, then "Images, Figures, Axes..." in the Category browser, and then finally on "mlreportgen.dom.Image". There is no restriction on the image needing to be on the search path.

WHICH is a base MATLAB function, completely unrelated to Report Generator:

https://www.mathworks.com/help/matlab/ref/which.html

Matt O'Brien 2022-11-25

I found the Which documentation. https://uk.mathworks.com/help/matlab/ref/which.html

The key was to add the word function to the search parameter.

Stephen23 2022-11-25

编辑：Stephen23 2022-11-25

"I cannot find any documentation for Which. I cannot find any documentation for Image."

I gave links to both of those in my previous comment, and I also explained the exact three clicks you need to find the Image documentation from the page you already were looking at. But here they are again:

https://www.mathworks.com/help/rptgen/ug/mlreportgen.dom.image-class.html

https://www.mathworks.com/help/matlab/ref/which.html

I am sure that after three days reading about this topic you have already read the entire Report Generator documentation twice over, but perhaps someone else might find these screenshots useful:

"If anyone can point me to the Documentation for 'Which' and 'Image' I would really appreciate it."

Tip: practice using the documentation. Always look at what is displayed in the browser (LHS) and at the very top and bottom of every page. There is a lot of hyperlinking and a lot of information, so you have to keep your eyes open.

请先登录，再进行评论。

Specify Path for Image in Report Generator

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

回答（1 个）

12 个评论
显示 10更早的评论隐藏 10更早的评论

另请参阅

类别

标签

产品

版本

Community Treasure Hunt

Specify Path for Image in Report Generator

1 个评论 显示 -1更早的评论隐藏 -1更早的评论

回答（1 个）

12 个评论 显示 10更早的评论隐藏 10更早的评论

另请参阅

类别

标签

产品

版本

Community Treasure Hunt

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

12 个评论
显示 10更早的评论隐藏 10更早的评论