How to delete a matrix in Matlab?

= MLDeleteMatrix( var_name ) deletes the named matrix from the MATLAB ® Workspace. Use this syntax when working directly in a worksheet.

How do you delete data in Matlab?

Select MATLAB > General and in the Deleting files section, select from the available options . Alternatively, you can use the recycle function. When file recycling is on, the delete function moves deleted files to a location specific to the platform: Windows ® — Recycle bin.

How do I delete a listing on matrix?

Matrix In Matrix, go into the listing you are wanting to cancel and click the blue Edit pen. Under Select Form, click on Change to Canceled. Under Status Information/New Status select Canceled. ... In Paragon, go to Listings, and under the Maintain section, select Listings. More items... Jun 6, 2023

Can you delete in MATLAB?

Swipe left on the command you want to remove. Tap Delete . To remove multiple items, select the commands and figures you want to remove and tap the Action button, and then tap Delete.

How do I remove a value from a dataset?

If you want to get rid of just the data and nothing else, you can use the command drop all . The drop command is used to remove variables or observations from the dataset in memory. If you want to drop variables, use drop varlist. If you want to drop observations, use drop with an if or an in qualifier or both.

How to trim a matrix in MATLAB?

B = trimdata( A , m ) trims A to size m by removing elements from the trailing side of A . For example, for a scalar size m : If A is a vector, then trimdata(A,m) trims A to length m . If A is a matrix, table, or timetable, then trimdata(A,m) trims A to have m rows .

How do you delete entries in MATLAB?

deleteEntry( sectionObj , entryName ,'DataSource', dictionaryName ) deletes an entry that is defined in the data dictionary DictionaryName . Use this syntax to uniquely identify an entry that is defined more than once in a hierarchy of referenced data dictionaries.

How do I delete a matrix room?

Delete rooms and leave rooms If the last person in the room leaves, the room is archived for 7 days. After that, is it deleted permanently. As room administrator, you should “kick” (remove) all members of the room first . Then you should leave the room as the last person to initiate the later deletion by the server.

How do you delete a figure in MATLAB?

How to Delete Graphics Objects delete(gca) If you want to delete multiple objects, pass an array of handles to delete . ... f = figure; y = rand(1,5); bar(y) The figure now contains axes and bar objects. ... close(f) MATLAB ® deletes each object.

How do you delete a matrix user?

Removing users, rooms and content If you're using Element, when you go to view more information about a particular user there will be a 'deactivate user' button (shown below) which does this for you. Note that only users on your homeserver can be deactivated, provided you have the admin permissions to do so.

How do I solve this error?: Matrix out of range for deletion (2024)

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Tessa Nefouse on 2 Aug 2024 at 16:27

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Commented: Andres Adam on 2 Aug 2024 at 22:46

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Can someone help me to figure out why I am out of range for deletion with this? This code was first used with data that had multiple values in the matrix (i.e. "carbclay" was a matrix with 4 values), but now I'm only doing it with one value, so maybe that's why it's not working? I have gotten a lot of help with this so I don't quite understand it fully, forgive my lack of knowledge when it comes to calling things the right name, hope someone can understand what's wrong:( The goal of the code is to be able to leave off legend entries if any of the data that I want to plot is missing from my table.

carbclay=[rocktypes(1)]; missingdata1=[];

np = 0;

hp = [];

legtxt = {};

i = find(string(TAllData.gen_rock_type)==carbclay);

if any([sum(isnan(TAllData.a_b(i)))==length(i),sum(isnan(TAllData.temp(i)))==length(i)])

missingdata1=[missingdata1,i];

else hp(end+1) = scatter(TAllData.temp(i),TAllData.a_b(i),120,c1,'filled','o','MarkerFaceAlpha',0.7);

legtxt{end+1} = carbclay{1};

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Andres Adam on 2 Aug 2024 at 16:47

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There is a lot of information missing in that piece of code, so it's very hard to find what is the actual issue and how to resolve it.

At a high-level glance, you are defining carbclay to be a scalar: 1 element. But you are trying to access the position "missingdata1". The position "missingdata1" is informed from examining the array "TAllData.gen_rock_type".

There is no indication that TAllData.gen_rock_type is the same length as carbclay, so that is a dangerous assignment to do.

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Tessa Nefouse on 2 Aug 2024 at 17:11

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I see you want to plot as a scatter the values of TAllData that are also in carbclay, and that do not give NaN in certain properties as defined by the first if clause.

You are currently wondering how to change the code to consider the case where carbclay is a scalar.

Short answer: you do not have to change anything. If the code runs OK for carbclay as an array, I don't see why it won't be applicable to arrays of length 1.

Longer answer: if you want to restructure the code anyway, legtxt and carbclay are scalars, they do not need to have {}. Also watch out for missingdata1. It is not being allocated before its use inside the double loop.

Additionally: your need to store text as legtxt might be unnecessary. Consider using the "DisplayName" property of scatter:

https://www.mathworks.com/help/matlab/ref/matlab.graphics.chart.primitive.scatter-properties.html#d126e1507255

hp(end+1) = scatter(TAllData.eff_Normal(i),TAllData.a_b(i),150,...

'filled','pentagram','MarkerFaceAlpha',0.7...

'DisplayName',carbclay{j});

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How do I solve this error?: Matrix out of range for deletion (2024)

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