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# Leon

### NOAA

144 total contributions since 2011

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Question

How to subset a table and pass the variable names?
I'm trying to subset a large table to only get the rows that I'm interested in. Below is my code: My table is named T % uniq...

16 giorni ago | 1 answer | 0

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Question

How to find the unique elements in multiple strings?
I have strings like the below. It can be 1 or can be more than 20. Here is an example with just 2 strings> A = "CTDTMP, CTDSA...

17 giorni ago | 1 answer | 0

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Question

How to link subgroup data points together in a plot?
I have matrix A like the below. The first column is the group number. % GroupNo, X, Y 1, x1, y1 1, x2, y2 1, x3, y3 2, x4, ...

circa un mese ago | 1 answer | 0

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Question

I'm using the below command to read my Excel files (see attached for an example): A = readtable('test.xlsx'); I notice one int...

circa 2 mesi ago | 1 answer | 0

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Question

How to check and convert a column of strings to numbers
I have some column data like this: A = "3" "3" "31" "31" "57" "58" or this A = ...

circa 2 mesi ago | 1 answer | 0

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Question

How to extract a column numerical data as strings?
I have some data stored in xlsx format. There is always a column data called "Station IDs". Sometimes it is numerical and someti...

circa 2 mesi ago | 1 answer | 0

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Question

How to decipher date formats?
My date columns stored in Excel can have various formats like the below: '9/1/19' '31-Dec-2020' I'm reading them into Matlab ...

2 mesi ago | 2 answers | 0

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Question

Here is my code and attached is my test.xlsx. clear all close all clc A = readtable('test.xlsx', 'FY20', 'PreserveVaria...

2 mesi ago | 1 answer | 0

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Question

How to identify duplicate rows in a matrix?
I have a matrix like the below. It could have millions of rows. A = [Year, Month, Day, Time, Lon, Lat, A, B, C; 20...

2 mesi ago | 1 answer | 0

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Question

How to replace all elements in a Table?
For example, if I want to replace all -9999 with -999, I can do this in a matrix: A(A==-9999) = -999; My question is how to do...

2 mesi ago | 1 answer | 0

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Question

How to pass a table generated from a function back to app-designer?
I have a function like this to generate a data table: function Function1(app, PATH, FILE); File_mat = fulfile(PATH, FILE...

2 mesi ago | 1 answer | 0

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Question

How to find the position of the first non-zero element of my matrix?
For example, if I have a column data like the below: A = [0; 1; 0; 0; 0]; The answer would be 2. For the below example: B = ...

3 mesi ago | 1 answer | 0

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Question

How to check if a column of a table exist?
The below command works if I know the exact names of the Table column variable names. any(strcmp('EXPOCODE', T1.Properties.Va...

3 mesi ago | 2 answers | 0

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Question

How to save a column of strings into a NetCDF file?
If I have a one-column data with a dimension of 200x1 (e.g., Longitude as in the below example), I know how to store them into a...

3 mesi ago | 1 answer | 0

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Question

How to assign a column of text string to another variable?
For example, A = repmat('test', 5,1); If I want to assign A to B, why the below doesn't work? What is the right way to do it? ...

3 mesi ago | 1 answer | 0

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Question

I have a table in spreadsheet (xlsx). One of the column is composed of either a numerical number, or several of them, like the b...

3 mesi ago | 1 answer | 0

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Question

How to make this text string column program faster?
Accessions here are text strings with a length between 3 and 8. Here is my current program to process them: % Accession: ACCN ...

3 mesi ago | 1 answer | 0

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Question

How to position the default interactivity bar?
I'm referring to the toolbar with things like Zoom in, Zoom out, Home, etc. Right now, its default position is to cover my xtick...

3 mesi ago | 1 answer | 0

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Question

How to set marker groups in one plot?
I have matrix A like the below. The first column is the group number. % GroupNo, X, Y 1, x1, y1 1, x2, y2 1, x3, y3 2, x4, ...

3 mesi ago | 1 answer | 0

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Question

how to fix this upper directory link?
File_W = fullfile(app.Path, '..', 'MyFolder', [fileName, '_myFormat_.xlsx']); writetable(T1, File_W); The above is my code to ...

3 mesi ago | 1 answer | 0

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Question

How to preserve embedded equations and color coding within Excel when using readtable and writetable?
Below is how I normally read info out of an Excel file T = readtable ('example.xlsx','PreserveVariableNames',true); What if I ...

3 mesi ago | 0 answers | 0

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Question

Is it possible to set the position of a uialert within app designer?
Below is my code to generate an alert pop up window. message = sprintf('No file is generated.'); uialert(app...

3 mesi ago | 1 answer | 0

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Question

3 mesi ago | 1 answer | 0

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Question

How to position two figures on one app-designer gridlayout position?
I need to overlay two figures on one app-designer gridlayout position. The two figures need to be one on top of the other, with ...

4 mesi ago | 1 answer | 0

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Question

How to use savefig in app-designer?
Here is how I plot my map in app-designer: load map_use; %M N [m n] = size(M); for i=...

4 mesi ago | 1 answer | 0

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Question

How not to delete one element of a figure when using cla?
I have a map with coastlines and sampling stations that are added from other scripts using the command plot. When I move on to t...

4 mesi ago | 2 answers | 0

### 2

How to properly position multiple plots within app-designer
For future reference, I finally got this figured it out. All I need to do is to set the "PlotBoxAspectRatioMode" property to "au...

4 mesi ago | 0

Question

How to make this simple script faster?
Each of the Sta{i}.test is a one-column data with unknown number of rows. As you know, to keep expanding Variable X is not the m...

4 mesi ago | 2 answers | 0

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Question

How to zoom in and out an App-designer app as if they are pictures?
I'm develping a program using app-designer. Right now, I have to rely on things like gridlayout, etc. in order to allow users to...

4 mesi ago | 0 answers | 0

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Question

How to write column headers into Excel files?
I'm trying to generate an Excel file with column headers. Below is my code. Why does the generated file do not containt the colu...

4 mesi ago | 0 answers | 0