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Leon


Last seen: 約1ヶ月 前

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174 2011 年以降の合計貢献数

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質問


How to read this kind of info out of a txt file and post them into Excel files?
I receive the below info from emails and would store them into an txt file named FmEmail.txt. The info is composed of several gr...

約1ヶ月 前 | 1 件の回答 | 0

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質問


Need help using contourfm in Map plotting
Normally, I can use contourf to plot a countour like this: [C1, h1] = contourf (X, Y, Z, [7.9:0.005:8.2], 'LineStyle', 'none' )...

約2ヶ月 前 | 1 件の回答 | 0

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質問


How to blank a grid value with a boundary file?
I have a grid like the below: [X, Y] = ndgrid([-180:0.25:179.75],[-90:0.25:89.75]); Z = griddata(...); %on the same grid as X ...

約2ヶ月 前 | 1 件の回答 | 0

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質問


How to find the nearby sampling stations
I have millions of samping sations, my goal is to find the nearby stations with a certain distance threshold. What is the best w...

2ヶ月 前 | 1 件の回答 | 0

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質問


How to convert arc length to km?
My goal is to find a good function to calculate the distance for two points for millions of data points. I found the fucntion ll...

2ヶ月 前 | 1 件の回答 | 0

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質問


How to create a callback for radio buttons
I have a group of radio buttons with 3 choices (app.mode1, app.mode2, and app.mode3) in app-designer. When a user clicks one of ...

3ヶ月 前 | 1 件の回答 | 0

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質問


How to change the button names depending on different situations?
I'm referring to buttons within app-designer. For example, I would want the button to be called "load" in one situation, and "p...

3ヶ月 前 | 1 件の回答 | 0

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回答済み
Matlab textArea automatic new line issue
It turns out that the issue are the square brackets. Once I replace them with strcat, everything works perfectly now. Before: ...

3ヶ月 前 | 1

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質問


Limits of app-designer spinner input field
I have an app-designer spinner input field called app.A. I can set its limits by below: app.A.Limits = [1, max(cruiseList)]; H...

3ヶ月 前 | 1 件の回答 | 0

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質問


How to find the index of a column data whose values are equal to another column data?
For example: A = [31; 2; 57; 36; 87; 36]; B = [2; 36]; My goal is to find the inex of all the column A that are equal to any ...

3ヶ月 前 | 1 件の回答 | 0

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質問


Matlab textArea automatic new line issue
I'm trying to generate a list of items. For each research cruise, its Year, Month, Day, Longitude, Latitude, etc. should all be ...

3ヶ月 前 | 2 件の回答 | 0

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質問


How to establish the handle value of a personalized plot function?
I need to develop a program that will: (a) plot one set of data into a figure at a time, (b) when the next set of data is plot...

3ヶ月 前 | 1 件の回答 | 0

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質問


How to write this line of code to create a Matlab table?
I have unknown number of column variables in cell array: Var{1} = [ 1; 2; 3; 4; 7]; Var{2} = [33; 10; 46; 7; 2]; ... If I kn...

6ヶ月 前 | 1 件の回答 | 0

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質問


Anyone has issues with the Mathworks Community forum system?
I mean the system I'm using to ask this question. A lot of the time it would freeze for no reason and become uneditable. I wou...

6ヶ月 前 | 0 件の回答 | 0

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質問


Is it possible to have a column data with some numerical values and some strings?
I have some really large data with millions of rows. I would have a column with 95% of them being numerical and 5% being strings...

6ヶ月 前 | 1 件の回答 | 0

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質問


How to read out the strings from this Excel file?
Attached is the Excel file. Here is the code I use to read values out of the Excel file: T1 = readtable ('test.xlsx'); Unfo...

6ヶ月 前 | 1 件の回答 | 0

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質問


How to first form a variable and then assign values to it?
My variable can be anything like the below: if case1 Var = Temperature elseif case2 Var = Pressure elseif case3 V...

8ヶ月 前 | 1 件の回答 | 0

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質問


How to position radio buttons into grid layouts in App Designer?
Is it possible to position each of the radio buttons in a radio button group into a grid layout? Many thanks.

8ヶ月 前 | 1 件の回答 | 1

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質問


How to form a structure array variable?
I have a structure array like the below Test{1}.a = [1; 2; 3]; Test{1}.b = [7; 3; 22]; Test{1}.c = [4; 9; 22]; ... If I hav...

8ヶ月 前 | 2 件の回答 | 0

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質問


Is there such a table units identification approach?
Imagine I have a table T1. We know its units will be Units = T1.Properties.VariableUnits; Similarly, its header will be Heade...

8ヶ月 前 | 2 件の回答 | 0

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質問


How to replace -999 values with NaN in a Matlab table?
I have a Matlab table T1, with columns like the below: T1.year T1.month T1.day T1.var1 T1.var2 ... Some of its columns a...

8ヶ月 前 | 2 件の回答 | 0

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質問


How to bold a phrase in a textbox?
Below is my code. How do I bold the phrase "Flag: "? C = [C, newline, ['Flag: ', num2str(B(i)) ] ]; app.text1.Value = C;...

8ヶ月 前 | 1 件の回答 | 0

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質問


How to check if a column data is equal to any of a group of values?
I have a column data A like the below: A = [1; 3; 2; 7; 11; 6]; B can be a group of numbers with unknow counts. For example B ...

8ヶ月 前 | 4 件の回答 | 0

4

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質問


string join does not work for char arrays?
I have a column list of numbers like the below M = [2; 3; 5; 7; 16]; What I want is to create a string array like this "2, 3,...

10ヶ月 前 | 4 件の回答 | 0

4

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質問


How to find unique group of numbers?
I have a cell array like the below, storing some groups of numbers: C{1} = [1; 3; 4]; C{2} = [3; 9; 135; 278]; C{3} = [6; 89;...

10ヶ月 前 | 1 件の回答 | 0

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質問


How to write special characters into an Excel cell?
I'm trying to write the units of my table into the 2nd row of my Excel file. Below is the code: writecell(T.Properties.Variable...

10ヶ月 前 | 1 件の回答 | 0

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質問


Adding a unit row to a table
Below is how I normall create my table in Excel: TT = table(Year, Month, Day, Longitude, Latitude, Oxygen, Chlorophyll_A); wri...

10ヶ月 前 | 1 件の回答 | 0

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質問


How to preserve subscript or superscript formatting in a text string?
I'm reading out some text strings (units) from some Excel files: filename = 'AAA.xlsx'; opt = detectImportOptions(filename); ...

12ヶ月 前 | 0 件の回答 | 0

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質問


How to read units on a 2nd row out of an Excel file?
Attached is an example Excel file. I'm using this command to read the info out of the file: T1 = readtable('test.xlsx', 'Pres...

12ヶ月 前 | 2 件の回答 | 0

2

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質問


How to force y-axis values not to use scientific notation in axes?
My y-axis ranges from 0.001 to 0.003, it always shows up as 1-3 x 10^-3. How do I force it show up as 0.001 to 0.003?

約1年 前 | 1 件の回答 | 0

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