njj1
National Institute of Standards and Technology
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提问
Scatter plot changes markers when using 'filled' option
I am using scatter plot and for some reason when I use the "filled" option, the marker shapes change to squares. Here is an exam...
5 years 前 | 1 个回答 | 0
1
个回答已回答
Date numbers in double to datestring matrix
You cannot put date strings and numerical data into a single matrix. You could use a cell if you wanted. For example: X_new...
Date numbers in double to datestring matrix
You cannot put date strings and numerical data into a single matrix. You could use a cell if you wanted. For example: X_new...
6 years 前 | 0
| 已接受
已回答
How do I make an array of elapsed times?
OK, so this sounds like it's inside a for loop, in which case you could try something like this: for runs=number_of_runs:-1...
How do I make an array of elapsed times?
OK, so this sounds like it's inside a for loop, in which case you could try something like this: for runs=number_of_runs:-1...
6 years 前 | 0
已回答
How to display velocity for each loop at 20 seconds?
You have an error in your code: fprint('%.0m/s\n', vj(,2) This code should work for you: Time=20; %Time the jumper ...
How to display velocity for each loop at 20 seconds?
You have an error in your code: fprint('%.0m/s\n', vj(,2) This code should work for you: Time=20; %Time the jumper ...
6 years 前 | 0
| 已接受
已回答
How to solve non linear equation for one variable?
If you want to solve for multiple values of temp and yieldstress, you will have to use a for loop. for i=1:numel(temp) ...
How to solve non linear equation for one variable?
If you want to solve for multiple values of temp and yieldstress, you will have to use a for loop. for i=1:numel(temp) ...
6 years 前 | 1
| 已接受
已回答
How to plot a pdf and cdf for my code
If you want to compute the pdf for a normal distribution over a range of values, you must input a vector of possible values sort...
How to plot a pdf and cdf for my code
If you want to compute the pdf for a normal distribution over a range of values, you must input a vector of possible values sort...
6 years 前 | 0
已回答
Finding the Maximum of 6 matrices
You can use max(X,[],dim) to specify the dimension from which to compute the maximum value. For example, if you let dim=2, then ...
Finding the Maximum of 6 matrices
You can use max(X,[],dim) to specify the dimension from which to compute the maximum value. For example, if you let dim=2, then ...
6 years 前 | 0
已回答
How do I make a gradient for my data
The gradient function in Matlab takes in two main arguments: the independent variable(s) step size and the data as a function of...
How do I make a gradient for my data
The gradient function in Matlab takes in two main arguments: the independent variable(s) step size and the data as a function of...
6 years 前 | 0
已回答
How would i run different events from the same .txt file?
You should import the entire matrix and then begin the splitting process. A = dlmread('Nest.txt',' '); %this assumes there ...
How would i run different events from the same .txt file?
You should import the entire matrix and then begin the splitting process. A = dlmread('Nest.txt',' '); %this assumes there ...
6 years 前 | 0
| 已接受
已回答
this is my equation using matlab , i can't get it manually.
This looks like it's the distance from each (x,y) pair to every other (x,y) pair. A_{i,j} = \sqrt{(x_i - x_j)^2}, where x = (...
this is my equation using matlab , i can't get it manually.
This looks like it's the distance from each (x,y) pair to every other (x,y) pair. A_{i,j} = \sqrt{(x_i - x_j)^2}, where x = (...
6 years 前 | 0
| 已接受
已回答
Classification of a whole matrix
You could turn the matrix into a vector (e.g., X = X(:)), then use the resulting vector as input to the classification learner. ...
Classification of a whole matrix
You could turn the matrix into a vector (e.g., X = X(:)), then use the resulting vector as input to the classification learner. ...
6 years 前 | 1
已回答
sorting the outputs of clusters
What do you mean "sort". You could save them to different variables. For example, if you main matrix is called X and you have cl...
sorting the outputs of clusters
What do you mean "sort". You could save them to different variables. For example, if you main matrix is called X and you have cl...
6 years 前 | 0
已回答
How to write a range of numbers in MATLAB?
ranges = [0,12,20:10:110]; %end points of requested speeds for i = 1:numel(ranges)-1 v{i} = V((V>ranges(i) & (V<=ra...
How to write a range of numbers in MATLAB?
ranges = [0,12,20:10:110]; %end points of requested speeds for i = 1:numel(ranges)-1 v{i} = V((V>ranges(i) & (V<=ra...
6 years 前 | 1
已回答
Kmeans clustering in k=10
1) Randomly initialize 10 cluster centroids. This can be done by simply randomly selecting 10 points from your dataset. 2) Co...
Kmeans clustering in k=10
1) Randomly initialize 10 cluster centroids. This can be done by simply randomly selecting 10 points from your dataset. 2) Co...
6 years 前 | 0
已回答
Help graphing this equation
You need to have an independent variable (e.g., when plotting y vs. x, x is the independent variable). So if you want to plot ep...
Help graphing this equation
You need to have an independent variable (e.g., when plotting y vs. x, x is the independent variable). So if you want to plot ep...
6 years 前 | 1
| 已接受
已回答
How to write a range of numbers in MATLAB?
v1 = V((V>0) & (V<=60)); numV1 = numel(v1); v2 = V((V>60) & (V<=80)); numV2 = numel(v2); v3 = V((V>80) & (V<=110)); numV...
How to write a range of numbers in MATLAB?
v1 = V((V>0) & (V<=60)); numV1 = numel(v1); v2 = V((V>60) & (V<=80)); numV2 = numel(v2); v3 = V((V>80) & (V<=110)); numV...
6 years 前 | 0
已回答
How to assign fields from a Struct into every 5th column of a Matrix
It is often helpful to step through your code and examine the variables at each step. One problem could be the shape of your var...
How to assign fields from a Struct into every 5th column of a Matrix
It is often helpful to step through your code and examine the variables at each step. One problem could be the shape of your var...
6 years 前 | 0
已回答
What is the easiest way to create a textbox?
The annotation command is quite useful and can save time for sure. Unfortunately, it does not have any 'top right' commands, so ...
What is the easiest way to create a textbox?
The annotation command is quite useful and can save time for sure. Unfortunately, it does not have any 'top right' commands, so ...
6 years 前 | 0
已回答
How to compare two different sample size on basis of datapoints in same interval?
You can use a histogram, but with the property 'Normalization' set to 'pdf'. This will plot an estimated probability density fun...
How to compare two different sample size on basis of datapoints in same interval?
You can use a histogram, but with the property 'Normalization' set to 'pdf'. This will plot an estimated probability density fun...
6 years 前 | 0
| 已接受
已回答
Merging array into matrix of unequal size
Why not create the matrix M such that it's size is [numel(x), num_of_desired_columns]? For example, if num_of_desired_columns = ...
Merging array into matrix of unequal size
Why not create the matrix M such that it's size is [numel(x), num_of_desired_columns]? For example, if num_of_desired_columns = ...
6 years 前 | 0
已回答
Math problem for code
Try using diff(S,1,dim) to get the difference between sequential elements in the matrix S. Each entry in diff(S) is (x_{n} - x_{...
Math problem for code
Try using diff(S,1,dim) to get the difference between sequential elements in the matrix S. Each entry in diff(S) is (x_{n} - x_{...
6 years 前 | 0
| 已接受
提问
Why doesn't 'HeaderLines' work in the readtable command?
I am importing some excel files into Matlab using the readtable command. There are a couple of header lines in the file that I w...
6 years 前 | 2 个回答 | 1
2
个回答已回答
Warning: Matrix is singular to working precision. how to solve?
There are ways of getting around a singular matrix, but they are a little ad hoc. have you tried QR decomposition ([Q,R] = qr(A)...
Warning: Matrix is singular to working precision. how to solve?
There are ways of getting around a singular matrix, but they are a little ad hoc. have you tried QR decomposition ([Q,R] = qr(A)...
6 years 前 | 0
已回答
Shading between two curves
You can try using the "fill" function (could also use "patch"). Just off the top of my head, if you can compute the area between...
Shading between two curves
You can try using the "fill" function (could also use "patch"). Just off the top of my head, if you can compute the area between...
6 years 前 | 0
已回答
How to compare the values of 2 arrays vs each other?
What do you mean by "similar"? If you want simply see the number of entries that are the same, then this could do the trick: ...
How to compare the values of 2 arrays vs each other?
What do you mean by "similar"? If you want simply see the number of entries that are the same, then this could do the trick: ...
6 years 前 | 0
| 已接受
已回答
How to keep an element fixed until it fits a condition?
Can you clean up the code a little? It's not clear where the loops begin and end... A couple more questions/comments. 1) How...
How to keep an element fixed until it fits a condition?
Can you clean up the code a little? It's not clear where the loops begin and end... A couple more questions/comments. 1) How...
6 years 前 | 0
已回答
I would like to know if my function is correct
You actually need not go through the whole for loop to do this. First off, I assume the number of entries in x is equal to the n...
I would like to know if my function is correct
You actually need not go through the whole for loop to do this. First off, I assume the number of entries in x is equal to the n...
6 years 前 | 0
已回答
How to see how a dataset changes over time with PCA.
It's hard to know exactly what you are hoping to achieve here. When using pca(x) in Matlab, we are assuming that "rows of X corr...
How to see how a dataset changes over time with PCA.
It's hard to know exactly what you are hoping to achieve here. When using pca(x) in Matlab, we are assuming that "rows of X corr...
6 years 前 | 0
提问
AR prediction leads fitted data
I am using aryule to construct a predictive AR filter. After I filter the data, the predicted values "lead" the actual data by o...
6 years 前 | 0 个回答 | 0
0
个回答
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