Community Profile # Chris

Last seen: 4 mesi fa Attivo dal 2021

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Domanda

How can I change all numbers in matrix to 1? except for 0
How can I change all numbers in matrix to 1? except for 0 I want to make the matrix which has 1(all the numbers) or 0.

4 mesi fa | 3 risposte | 0

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Domanda

I used "[b,dev.stats]=glmfit(b1,a1,'binomial')" function, and it has an error..
I used "[b,dev.stats]=glmfit(b1,a1,'binomial')" function, and it has an error.. a1 and b1 are 131472*1 matrix. When I used "gl...

4 mesi fa | 1 risposta | 0

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Domanda

When I used "gamfit(data)", it says "X must be non-negative."
I have 45000*1 data table and all of values are non negative. When I used "gamfit(data)", it says "X must be non-negative." Wou...

4 mesi fa | 1 risposta | 0

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Domanda

How can I plot Kendall tau trend by using MATLAB code?
I have 1*20 matrix and want to plot Kendall tau trend. May I ask how to do it by using codes?

5 mesi fa | 1 risposta | 0

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Domanda

May I ask how I can find 95% confidence interval of skew_FP() from these codes?
rng(1000) nn=143; for n=1:1000; r=rand(nn,1); ss(n)=std(r); m(n)=mean(r); med(n)=median(r); nu(n)=numel(r) skew_FP(n) = ...

5 mesi fa | 1 risposta | 0

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Domanda

I want to test whether the skewness of the samples(from A:900*1 matrix) converge to 0 or not by using Montecarlo simulation.
Hi, I want to test whether the skewness of the samples(from A:900*1 matrix) converge to 0 or not by using Montecarlo simulation...

5 mesi fa | 0 risposte | 0

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Domanda

I want to determine if the data(tmin) are Gaussian distributed or not by using Montecarlo simulation with skewness.
nn=143; for n=1:1000; load('ERA_Livneh_Birmingham.mat') ss(n)=std(tmin); m(n)=mean(tmin); med(n)=median(tmin); nu(n)=numel...

5 mesi fa | 0 risposte | 0

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Domanda

I want to do bootstrap analysis by using 20*1 matrix.
I want to draw 500 samples from the 20*1 matrix (20 pairs of observations). In this case, what codes do I have to use?

5 mesi fa | 2 risposte | 0

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Domanda

Can I use "chi2gof" code in this case?
The forecasts of event A: 500 and the observations of event A: 400. I want to use chi-square test. In this case, can I use "chi...

5 mesi fa | 1 risposta | 0

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Domanda

May I ask how I can get the 95% confidence intervals for the true mean data?
"A" is data with 700*1 matrix. I want to have the 95% confidence intervals for the true mean of A. What codes do I have to use...

5 mesi fa | 0 risposte | 0

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Domanda

What codes do I have to use to determine if the data are Gaussian distributed?
What codes do I have to use to determine if the data are Gaussian distributed?

5 mesi fa | 1 risposta | 0

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Domanda

May I ask how to plot Poisson distribution plot?
lamda = 47/42; year_span = 1, 2, ....., 9; x = 0; p = (exp(-lamda*year_span))*((lamda*year_span)^x)/(factorial(x)); 1-p T...

5 mesi fa | 1 risposta | 0

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Domanda

Would you please tell me what do I have to fix in Binomial distribution code?
for n = 2:30 for x=1:n; p(x) = (factorial(n)/(factorial(x)* factorial(n-x)))*((10/230)^x)*(1-(10/230).^(n-x)); ...

5 mesi fa | 1 risposta | 0

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Domanda

The scale parameter is 2 and shape parameter is 1. I want to use "gamcdf" code for 75th percentile value, then do I have to use ...

6 mesi fa | 1 risposta | 0

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Domanda

May I ask what MATLAB code for expected value is by fitting a Poisson distribution?
A = [1, 2, 3, 4, ..., 100] In this case, I want to fit a Possion distribution and get the expected value. Would you please tel...

6 mesi fa | 1 risposta | 0

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Domanda

I have troubles in for loop with 2 variables.
for n = 2:30 for x=1:n; p(x) = (factorial(n)./(factorial(x).* factorial(n-x))).*((10/230).^x).*(1-(10/230).^(n-x))...

6 mesi fa | 1 risposta | 0

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Domanda

What is the code of Gamma distribution with method of moments?
What is the code of Gamma distribution with method of moments?

6 mesi fa | 1 risposta | 0

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Domanda

How can I make a Monte Carlo estimate for skewness (by using a sample size of n=500 with 500 repetitions?)
May I ask how can I make a Monte Carlo estimate for skewness (by using a sample size of n=500 with 500 repetitions?) Also, how ...

6 mesi fa | 1 risposta | 0

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Domanda

Would you tell me the code for Fisher Pearson skewness?
Would you tell me the code for Fisher Pearson skewness? How can I get the skewness with Fisher Pearson formula..?

6 mesi fa | 2 risposte | 0

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Domanda

How can I plot "Monte Carlo" with 3000 random numbers?
How can I plot "Monte Carlo" with 3000 random numbers?

6 mesi fa | 0 risposte | 0

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Domanda

what formula do I have to put for calculating by using MATLAB?
N = 500, S = 110. Then what formula do I have to put for calculating by using MATLAB?

6 mesi fa | 1 risposta | 0

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Domanda

How can I compare with daily precipitation data from the day before?
I have 30 years of daily precipitation data. I want to compare those data with the data from the day before. A is 10950*1 matr...

7 mesi fa | 1 risposta | 0

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Domanda

How can I find numbers>30 in 810*1 matrix?
How can I find numbers>30 in 810*1 matrix?

7 mesi fa | 1 risposta | 0

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Domanda

How can I extract specific data?
There are 7300*1 matrix of daily temperatures. Would you please tell me how can I get summer temperatures (June to August)?

7 mesi fa | 1 risposta | 0

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Domanda

How can I select or extract rows?
I have a 9855 * 1 table indicating months. Such as 1 1 1 2 2 2 3 3 3 . . 12 12 12 1 1 1 2 2 2 ... How ...

7 mesi fa | 1 risposta | 0

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Domanda

How to extract the specific rows from the table?
There are total of 30 years precipitation data (Januaray to December). There are only one column with January to December. How...

7 mesi fa | 0 risposte | 0

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Domanda

How can I get precipitation data only for summer (June~August for 30 years)?
I have a daily precipitation data for 30 years. Then how can I get precipitation only for summer (June~August for 30 years)?

7 mesi fa | 1 risposta | 0

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Domanda

How can I convert x-axis (cycle or day) to x-axis (frequency) ?
How can I convert x-axis (cycle or day) to x-axis (frequency) ? If it is possible, could you tell me the method??

oltre un anno fa | 1 risposta | 0

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Domanda

I want to draw dotted line arrow by using quiver. What do I have to do?
I want to draw dotted line arrow by using quiver. What do I have to do?

oltre un anno fa | 1 risposta | 0

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