Error in using Load

I am trying to follow "Detecting Outbreaks and Significant Changes in Signals".

Link as follow: Link

load WestAfricanEbolaOutbreak2014
plot(WHOreportdate, [TotalCasesGuinea TotalCasesLiberia TotalCasesSierraLeone],'.-')
legend('Guinea','Liberia','Sierra Leone');
title('Total suspected, probable and confirmed cases of Ebola virus disease');

When I run the code, it said:

Error using load

Unable to read file 'WestAfricanEbolaOutbreak2014'. No such file or directory.

[dpb]

The file has to be in a location on MATLABPATH or use a fully-qualified file name --

doc fullfile

may be useful for the latter...

[Matlaber]

can you elebrate more?

I am following the matlab website.

Answer 1

[Star Strider]

That example should be at:

web(fullfile(docroot, 'signal/examples/detecting-outbreaks-and-significant-changes-in-signals.html'))

Run that from a script (or your Command Window). If you have it, that should open the Help Browser to that page. (The documentation does not mention when that example was added.)

[Matlaber]

Thanks.

1. Do you mean run the "example/code" you shown above in my CMD? Will it be matlab directories?
2. I actually want to run the example in my matlab tools, so that i can modify the dataset. However it said:

Error using load

Unable to read file 'WestAfricanEbolaOutbreak2014'. No such file or directory.

[Star Strider]

My pleasure.

Run that line from a script or your Command Window.

If you have the correct MATLAB version, that should open the Help Browser to the Detecting Outbreaks and Significant Changes in Signals example documentation page.

[Star Strider]

Copied from CUSUM and CUMSUM, cusum not found:

‘I am using Matlab version 2015b.’

You do not have the Example, or the functions you need to use with it (introduced in R2016a).

[Matlaber]

So even load the file with version 2015b?

load WestAfricanEbolaOutbreak2014
plot(WHOreportdate, [TotalCasesGuinea TotalCasesLiberia TotalCasesSierraLeone],'.-')
legend('Guinea','Liberia','Sierra Leone');
title('Total suspected, probable and confirmed cases of Ebola virus disease');

this is not about cumsum or cusum question here.

[Star Strider]

‘So even load the file with version 2015b?’

Using load to import the file is not the problem. You do not have the file in your version of the Signal Processing Toolbox.

‘this is not about cumsum or cusum question here.’

I know. You likely do not have cusum either.

If you want to run that Example, you need to upgrade at least to R2016a.

[Matlaber]

Thanks, noted now.

Meaning the file "WestAfricanEbolaOutbreak2014" is only available for version at least R2016a.

I need version R2016a to run:

load WestAfricanEbolaOutbreak2014

[Star Strider]

My pleasure.

Yes. You need R2016a or later versions to do that.

[Matlaber]

Thanks!

What is the method to find out which version contain which functions?

For example, how do you know cusum is available on R2016a onwords, and not R2018b onwords?

[Star Strider]

My pleasure!

The only certain way to know what functions have been added to new releases would most likely be to search the Release Notes (link). It would not tell the functions that are already in a particular release. You would have to search the documentation for the release to find that information.

If you are searching for a specific function, they usually (but not always) have the version introduction listed near the end of the documentation page for the function. The best place to do that is the online documentation, since it always has the lastest release documentation posted.

[Matlaber]

Thanks!

I saw the version stated in the document.

Thanks a lot. Well explained.

[Star Strider]

As always, my pleasure!

Thank you!