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David K.


32 2019 年以降の合計貢献数

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Sorting a table in Matlab
Yes, you can do it with the sortrows function. Here is an example: A = [1 2 4 5 3 6 5 6]; B = {'a', 'b', 'c', 'e', 'f', 'ba', ...

3日 前 | 0

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So i wanted to add a column to this table.
So one big problem here is that you do not have a table. You have a matrix. And matrices cannot have strings and numbers in them...

5日 前 | 1

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hey guys im trying to plot this in 3D but i keep getting an error, "Data cannot have more than 2 dimensions."
So the issue is that plot3 takes either a vector or a 2d matrix. Since you are plotting it as points you do not actually need to...

19日 前 | 2

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Index exceeds matrix dimensions
It appears that for some reason fileNameArray is not being populated with values in the line fileNameArray = dir('*.dat'); Ma...

19日 前 | 0

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How to find specific values in a table, and create an array from rows containing those values?
Here is my go at it. % Create my table so you know what I am testing with. names = {'ssrp' , 'ssrp','tghh'}'; values = [123, ...

19日 前 | 0

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Index exceeds array bounds error
The problem is a0. In the line hzrd(i,j)=exp(a(i)+b*w(i,j)) ; a needs to be have at least k elements for it to work. You set ...

20日 前 | 1

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how to store multpile files which has been loaded first in the same script ,in the new variable , through loop
So, I believe this answer could be done using the eval function but since that function is highly discouraged here is my attempt...

20日 前 | 0

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Why are spaces ignored when a character string is scanned?
This is because of the way fscanf reads it in. If you go to the linked documentation and scroll down to Character Fields, it not...

21日 前 | 0

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How many years to double initial investment with various interest rates
If I understand the equation you posted correctly lets walk through this. S = total amount after n years if P was initially inve...

24日 前 | 0

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Generating a grid around circles in an image
So I felt like making it interactive so I used the built in guide function in matlab to create a GUI. Attached are the two files...

24日 前 | 1

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What sort of a filter/method can be applied to smoothen sharp peaks on a surface?
In general, if you want to smooth out peaks you want to get rid of the high frequency content, aka a low pass filter. The easies...

24日 前 | 0

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How to plot for different values of parameters on one run?
Matlab actually has a page on this called Parameterizing Functions. Using one of the options for that I believe this will do i...

27日 前 | 0

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How to create an animated plot of a temperature data with holding on each year?
Alright lets see how much I can help with. First off to gradient between colors I have a little way down below. I get the rgb ...

27日 前 | 1

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can someone please help me to find out mistake
Here you go. A few things needed to be changed. First the change that Torsten initially pointed out. Then we further change it t...

27日 前 | 0

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storing output of for loop
I believe your goal can be more easily solved using the built in Matlab function reshape. It looks to me like you have a 1x30000...

約1ヶ月 前 | 0

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Is it possible to run a function that requires input variables when they are declared later in the function?
It looks to me that the main problem is that you are using the first function wrong. When you define the function function [ar...

約1ヶ月 前 | 0

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Log Simulink simulation data to structure element
The way that I would do it is this. In your main simulink model, right click anywhere go to ModelProperties -> Callbacks -> Stop...

約1ヶ月 前 | 1

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different titles for animation
I would suggest creating the title like this: months = {'Jan', 'Feb', ...}; years = num2str((1979:2018)'); for i = 1:40 ...

約1ヶ月 前 | 1

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how to save the index during for loop?
A couple different things can fix this, but I would suggest this one just creating the variable a again after your for loop -> ...

約1ヶ月 前 | 0

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how to solve Index exceeds the number of array elements (1).
What this error is saying is that at some point in that line you are exceeding the number of elements in an array. The (1) is in...

約1ヶ月 前 | 0

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How to display the two biggest blobs in terms of area?
In the line biggestBlob=ismember(labeledImage,indexOfBiggest(1)); you are finding the biggest by looking at the first index i...

約1ヶ月 前 | 1

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Changing colors in a stacked bar graph to specific ones?
In order to figure out how that code works I'd suggest first adding a pause(1) before the end of the for loop. This way you can ...

約1ヶ月 前 | 0

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How to convert a continuous figure to discrete?
A couple different ways to do this. When plotting discrete values it is often preferred to use stem instead of plot. It does not...

約1ヶ月 前 | 0

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Adding columns to tables
Check out https://www.mathworks.com/help/matlab/matlab_prog/add-and-delete-table-variables.html if you have not. It has many wa...

約1ヶ月 前 | 0

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Merge up sweep and down sweep together in the same figure to get a chirp up and down
It seems like everything you've done so far is good. To merge two matrices you can use this simple command: chirp = [Tx1 Tx2]; ...

約1ヶ月 前 | 0

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Controlling a generic engine block
It sounds like you want a very binary controller. If a velocity is larger than a threshold do one thing, if not do another. If t...

約1ヶ月 前 | 0

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how to check every single element in a matrix vector wise
A matrix is indexed like this: A(row,column). So to traverse a single column you leave the second value the same while changing ...

約1ヶ月 前 | 0

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Figure box does not show data when using plot(x,y)
The reason is that you are trying to create a plot with a single data point multiple times. So each time you plot there are not ...

約1ヶ月 前 | 0

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How can I find the best parameter values to minimize a function
If you do not really care about efficiency and time you can just loop through and try everything yourself. fftlen = [512 1024 2...

約1ヶ月 前 | 0

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Real Time Data Store in Inf Array
If I understand correctly what you want and a guess at how you are formatting it. Pointer = 1; window = sizeFilter % However ...

約1ヶ月 前 | 0

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