Leon

Last seen: circa un mese fa | Attivo dal 2019

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Domanda

The single function is not behaving as expected
I'm trying to use single to save disk space because my files are very large. I know it could affect the precision if my numbers ...

circa un mese fa | 2 risposte | 0

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Domanda

New empty figure window shows up every time I run this colormap command
I have a program created using App-Designer. After adding the code below to my script, it would generate a new empty figure, ev...

4 mesi fa | 1 risposta | 0

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Domanda

How to disable interactive icons on Matlab plots within App Designer?
Every time after a Matlab plot is created, if you hover your mouse cursor to the upper right side of it, you will see small icon...

4 mesi fa | 1 risposta | 0

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Domanda

My program developed in App Designer is not fully functional in Runtime
Does anyone know why my program developed in App Designer is not working properly within Runtime? Is that because I have some co...

5 mesi fa | 0 risposte | 0

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Domanda

In App Designer, how can I ensure that the values displayed on the UI do not appear in scientific notation?
For example, I have a field called app.Profile.Value. Large numbers are often converted to scientific notation. How do I force a...

6 mesi fa | 1 risposta | 0

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Domanda

Can not read MAT file in another language
I have two MAT files. I can open A but can not open B in Julia. When I used the command “@show(File)”. I got the below for File...

6 mesi fa | 1 risposta | 0

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Domanda

Precision lost when combining Int32 integers with single precision numerical numbers
I have a column data A composed of Int32 numbers, and another column data B composed of single precision numbers. When I try t...

6 mesi fa | 4 risposte | 0

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Domanda

How to ensure the file path information in Matlab uialert windows is not abbreviated?
Below is my code: File_W = fullfile(Path, 'Output', ['Test_.xlsx']); message = sprintf(['An Excel file named ', File_W, ' has ...

6 mesi fa | 0 risposte | 0

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Domanda

A question about text string concatenation
Below is my code to concatenate several text strings together. Why doesn't it work? When I used disp(a), it shows them as separa...

7 mesi fa | 3 risposte | 0

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Domanda

Error: Inputs must be character vectors, cell arrays of character vectors, or string arrays.
Here is an example of my Variable A: A= "33RO30160505" "33RO30160507" "33RO30160508" isstring(A) = 1. However, I keep ge...

7 mesi fa | 1 risposta | 0

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Domanda

How to store this type of data with unknown number of them?
I have a N by 3 column data, each row, I need to store some additional information like the below: empty [] [1, 2, 31] [45] ...

7 mesi fa | 1 risposta | 0

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Domanda

How to convert a column of float or not data into double?
My data column can be float numbers throughout, e.g. A = [1, 2, 3]; or a strings, like the below B = [1, 2, 3, 'n/a', 5]; I...

7 mesi fa | 3 risposte | 0

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Domanda

How to reduce the file size of MAT files?
My MAT file is around 7 GB. It has been very slow to read and write into this file. I wonder if there are ways I can make the fi...

7 mesi fa | 2 risposte | 0

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Domanda

Is it possible to reduce this for loop into one line of code?
My goal is to simplify the for-loop below to a one line of code. Please see attached for a mat file storing the Headers variable...

10 mesi fa | 4 risposte | 0

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Domanda

How to simplify this for-loop into a one line of code?
Attached is a file storing a cell array A, a logical array for the columns: tf, and a logical array for A: map2. My goal is to...

10 mesi fa | 1 risposta | 0

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Risposto
How to identify strings that can be converted to float numbers in a cell array?
Can it be as simple as this? >> str2double(A) ans = NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN NaN ...

10 mesi fa | 0

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How to identify strings that can be converted to float numbers in a cell array?
Many thanks for the proposed solution. Unfortunately, I have hundreds of these files, and each of them is like a box of chocol...

10 mesi fa | 0

Domanda

How to identify strings that can be converted to float numbers in a cell array?
I can convert a string to double using str2double, but my goal is to identify such cells. Attached is an example file. A = rea...

10 mesi fa | 2 risposte | 0

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Domanda

Cell2table issues when a numerical column is read as strings
Attached is a data file test5.mat, containing a varaible "A". It stores one column (out of many columns, which can either be num...

10 mesi fa | 1 risposta | 0

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Domanda

How to assign a double value to a cell array?
My goal is to replace any missing values in my cell array T1 with -999, if the column is composed of floating numbers, and repla...

10 mesi fa | 1 risposta | 0

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Domanda

Is this a bug of the detectImportOptions function?
My goal is to determine the location of the variable names row. Attached is a sample Excel data file. Metadata information cou...

10 mesi fa | 1 risposta | 0

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Domanda

Matlab Central bugs?
While I was trying to post a question on my Safari, several fields, including the "Description" was grayed out. As a result, I c...

10 mesi fa | 0 risposte | 0

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Domanda

How to read all rows of an Excel with missing rows included?
My goal is to read all contents of an Excel file as cells using the function "readcell". However, every time when I used this fu...

10 mesi fa | 4 risposte | 0

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Domanda

How to detect missing values in a string cell array
I have a cell array A like the below: Columns 1 through 4 {'NAME'} {'STNNBR'} {[<missing>]} {'SAMPNO'} . I tri...

10 mesi fa | 1 risposta | 0

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Domanda

Indexing data on a grid
I have a variable VAR with a size of 360 x 180. I also have an index Ind (composed of 1 and 0) on the same size. How do I get a ...

circa 2 anni fa | 1 risposta | 0

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Domanda

How do I do a regress like this?
I have a series of numbers that decrease by about the same percetentage rate with time. How do I do the regression to find the e...

oltre 2 anni fa | 2 risposte | 0

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Domanda

Anyone knows how to make a vertical contour plot like this?
Attached is an example. The figure is from this paper: https://science.sciencemag.org/content/363/6432/1193. I wonder if this c...

circa 5 anni fa | 0 risposte | 0

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Inviato

Reading information of a NetCDF file
"ncdisp" does not indicate the N number of a variable. Here is an alternative function. Var = netcdf.getVar(ncid, N);

circa 5 anni fa | 1 download |

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Domanda

How to make a text area in app-designer GUI copyable?
I create a GUI interface using Matlab app-designer. One thing I notice is that the info generated inside a text area box can not...

circa 5 anni fa | 0 risposte | 0

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Domanda

How to write a loop so that I do not need to repeat my super long inner loop?
The station number column of my data can be either numerical or string. I have to rely on the station number info to split the d...

oltre 5 anni fa | 1 risposta | 0

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