Jeff Miller
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Content Feed
How do I get MATLAB to display the d' when my hit rate = 1 using the norminv function?
No, d' cannot be computed when an observed hit_rate is 1 or fa_rate is zero. One of the most common work-arounds for this probl...
etwa 9 Stunden ago | 0
How to delete some of anonymous variables randomly?
One way to approach the problem is to write a function f(x) where x is a vector with 47 positions. When you call f, put numeric...
2 Tage ago | 0
Random Laplacian distribution in a specified interval
Here is a quick and dirty way to do this with Cupid: location = 0; % set whatever Laplacian parameters you want. scale = 1; ...
4 Tage ago | 0
| accepted
kstest for uniform distribution
you can test for the fit of a discrete distribution, including uniform, with chi2gof. One of the examples (about 1/3 of the way...
7 Tage ago | 1
| accepted
How to remove the outliers in distribution fitter
If you click on the "Exclude" button in the picture you posted, you will get the option to set lower and upper limits to exclude...
11 Tage ago | 1
Bootstrap multi linear model
The problem is that fitlm produces a complicated output structure and bootstrp doesn't know what to do with it. x = (1:1000)'; ...
15 Tage ago | 0
| accepted
How Can I simulate Data for Least-Squares Variance Component Estimation (LS-VCE) for Multiple regression?
You could use mvnrnd to generate random values of x1-x4. Is that what you need?
21 Tage ago | 0
How to group data for MANOVA1 analysis
84*84 is not going to work, sorry. For MANOVA, you need to have more cases in each group than the number of variables. Some pos...
29 Tage ago | 0
How to test if values are close togather using p-value (ttest)
A small p value means that the data are incompatible with some underlying assumption/model. For example, you could potentially ...
etwa ein Monat ago | 0
Finding the minimum of a complicated function with variables and parameters
If I understand the problem correctly, then this should be close to what you want: function bestEsts = MyOuterFn(x,y) MyErrFn ...
etwa ein Monat ago | 0
How to get correct p-values for the Steel-Dwass test?
The problem is with the 'inf' value given as the degrees of freedom in this line p_steelDwass(i, 1) = 1 - tcdf(t_steelDwass...
etwa ein Monat ago | 0
How to calculate for significant difference between Cohen's Kappa values?
As I understand it, the fundamental question is whether tests A & B agree better than tests A & C, beyond a minor improvement th...
etwa ein Monat ago | 0
fsolve doesn't find a solution when the value of the objective function is obtained through a Montecarlo simulation
I don't know if it can be done in the context of your simulation, but sometimes it is helpful to pick the "random" variables sys...
etwa ein Monat ago | 0
Question
speed up integrating the same function over many overlapping intervals?
I need to compute many different integrals of the same function fn, essentially like this: Xint = size(X); for i=1:numel(X) ...
etwa ein Monat ago | 2 answers | 0
2
answersDifferences between functions ezfit and Matlab's gamfit in fitting data to the gamma distribution?
There are two somewhat different parameterizations of the gamma distribution. In one (which I think is used by gamfit), the mean...
etwa ein Monat ago | 0
How do I calculate the R^2?
Either of these: Rsqr = corr(x(:,2),y)^2; RsqrAlso = 1-(std(resids)/std(y))^2;
etwa ein Monat ago | 1
I would like to find elements of a matrix that fulfill a condition but after every loop the condition is changing.
I think this will almost do what you want. edges = 0:0.05:30; [~,~,bin_numbers] = histcounts(diameters,edges); The output bin...
etwa ein Monat ago | 0
| accepted
Generating a categorical array with group names
Is this what you are after? part1 = repmat({'Name1'},1055,1); part2 = repmat({'Name2'},1641,1); part3 = repmat({'Name3'},2055...
etwa ein Monat ago | 0
| accepted
Forming a CDF by adding different types of PDF and generating random number
It seems like there are several different questions here. If you want to generate random numbers from a custom CDF, one simple ...
etwa 2 Monate ago | 2
| accepted
Calculating pdf and cdf for data extracted as a table
This command pdfwindspeed = pdf('Normal',A) returns the pdf of the A values within the standard normal with mu=0 and sigma=1. ...
etwa 2 Monate ago | 0
How to use one data set to find the mean of another?
NON1 = NON == 1; % this makes a boolean vector that is true for the positions where NON==1 mean(PLCm(NON1)); % this computes ...
etwa 2 Monate ago | 1
Question
Request for help computing convolution of random variables via fft
Inspired by the answers of @David Goodmanson to this earlier question, I have been trying to understand exactly how in general t...
etwa 2 Monate ago | 2 answers | 0
2
answersrun glmfit , why get Warning: X is ill conditioned, or the model is overparameterized
The problem is that the x1-x5 values sum to 24 in every row. This means that any one of the x's can be predicted from the rest ...
2 Monate ago | 0
CDF of VOn Mises distribution
The Von Mises distribution is included in Cupid. You could use it like this to calculate CDF values: >> location = 10; >> conc...
2 Monate ago | 0
How do I get four different answers guaranteed generated randomly from several arrays?
One way is to put the two random selections inside a while loop, check whether any meals are repeated, and then only exit the lo...
2 Monate ago | 0
| accepted
How to load .mat data from another folder?
You need the folder name at the beginning of the string you pass to load, maybe something like this: for iFile = 1:numel(N1) ...
2 Monate ago | 1
Probplot for Generalized Extreme Value distribution
Cupid includes the Frechet distribution. It doesn't have probplot function, but you can easily produce something similar: % as...
2 Monate ago | 0
| accepted
How to NOT share variable with nested function?
It sounds like your "big code" is a script rather than a function, but now you want to make a function out of it. I suggest you...
2 Monate ago | 0
How to plot confidence bounds for a theoretical cumulative distribution function?
For a given X value, the theoretical cumulative probability is p = F(X). Suppose you have a sample of N observations and you le...
3 Monate ago | 0
How to loop through variable names and to save them on one file?
You can use strings for variable names like this: a = 'WD__Avr'; for.... [...] x = mean(data_measured.(a)(ind_time)); % no...
3 Monate ago | 0
| accepted
