Answered

Using Psychtoolbox KbCheck() functions, how can I test for a renewed keypress?

One approach is to check timeSecs. This will be very small if the key is continuously held down from the previous trial, but pre...

Using Psychtoolbox KbCheck() functions, how can I test for a renewed keypress?

One approach is to check timeSecs. This will be very small if the key is continuously held down from the previous trial, but pre...

1 year ago | 0

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Answered

How can I make heatmap scale fixed?

e.g., h1 = heatmap(); h1.ColorLimits = [0 1000];

How can I make heatmap scale fixed?

e.g., h1 = heatmap(); h1.ColorLimits = [0 1000];

1 year ago | 0

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Answered

Simple function for obtain a T statistic from sample mean, stdev & hypothetical mean

Here you go: t_observed = (sample_mean - hypothetical_mean) / sample_sd * sqrt(n); n is the number of scores averaged to get t...

Simple function for obtain a T statistic from sample mean, stdev & hypothetical mean

Here you go: t_observed = (sample_mean - hypothetical_mean) / sample_sd * sqrt(n); n is the number of scores averaged to get t...

1 year ago | 0

Answered

creating standard error of mean for bar graphs in code, can you please correct/modify/help my code?

Hard to say for sure without knowing what the original data were, but that doesn't look right to me. Can you explain how the va...

creating standard error of mean for bar graphs in code, can you please correct/modify/help my code?

Hard to say for sure without knowing what the original data were, but that doesn't look right to me. Can you explain how the va...

1 year ago | 0

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Answered

Generating correlated data for simulation

One option is to create the second array by adding a random number to each element of the first array. For example sigma = 1; ...

Generating correlated data for simulation

One option is to create the second array by adding a random number to each element of the first array. For example sigma = 1; ...

1 year ago | 0

Answered

I want to create a QQ & PP plot using L-Moments to fit the GEV but get this error: unable to perform assignment b/c the left & right sides have a different number of elements

Assign the problematic result to a new variable so that you can see what elements it has, like this: temp_var = psi + alpha*(1...

I want to create a QQ & PP plot using L-Moments to fit the GEV but get this error: unable to perform assignment b/c the left & right sides have a different number of elements

Assign the problematic result to a new variable so that you can see what elements it has, like this: temp_var = psi + alpha*(1...

1 year ago | 0

Answered

question on repeated measure GLM model

I don't fully understand the design so I won't attempt to answer questions 2) or 3), but I think this is the answer to 1): If '...

question on repeated measure GLM model

I don't fully understand the design so I won't attempt to answer questions 2) or 3), but I think this is the answer to 1): If '...

1 year ago | 0

Answered

How to run the ANCOVA test with categorical covariate in matlab?

It doesn't really make sense to run ANCOVA with a categorical covariate. Instead, think of the categorical covariate as another...

How to run the ANCOVA test with categorical covariate in matlab?

It doesn't really make sense to run ANCOVA with a categorical covariate. Instead, think of the categorical covariate as another...

1 year ago | 0

Answered

How can I perform wilcoxon Test with paired samples and vectors of differente sizes?

The Wilcoxon test is for data that come in pairs, so the vectors must be the same size. If you are just missing one score or th...

How can I perform wilcoxon Test with paired samples and vectors of differente sizes?

The Wilcoxon test is for data that come in pairs, so the vectors must be the same size. If you are just missing one score or th...

1 year ago | 0

Answered

Getting a percentile from a histogram

Usually this is done by linear interpolation within the relevant bin. To stick with your 95th percentile example, suppose you h...

Getting a percentile from a histogram

Usually this is done by linear interpolation within the relevant bin. To stick with your 95th percentile example, suppose you h...

1 year ago | 0

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Answered

A problem in the usage of multidimensional scaling (cmdscale)

You can't cancel that. With only the distance information in D, the mds function has no way of knowing what is up/down/left/rig...

A problem in the usage of multidimensional scaling (cmdscale)

You can't cancel that. With only the distance information in D, the mds function has no way of knowing what is up/down/left/rig...

1 year ago | 1

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Answered

How to integrate a lognormal pdf

It's hard to say for sure without seeing your xx and xxx values, but maybe it is just your expectations that are faulty? Certai...

How to integrate a lognormal pdf

It's hard to say for sure without seeing your xx and xxx values, but maybe it is just your expectations that are faulty? Certai...

1 year ago | 0

Answered

Find number of factors for factor analyses

My $0.02 worth: I would suggest running facan with nBasis=8 and checking the resulting scree plot (plot of eigenvalue as a func...

Find number of factors for factor analyses

My $0.02 worth: I would suggest running facan with nBasis=8 and checking the resulting scree plot (plot of eigenvalue as a func...

1 year ago | 0

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Answered

linear mixed-effects model (fitlme) add array variable

I'm pretty sure the predictors have to be single values, so you can't feed in an array as a single unified predictor. You could...

linear mixed-effects model (fitlme) add array variable

I'm pretty sure the predictors have to be single values, so you can't feed in an array as a single unified predictor. You could...

1 year ago | 0

Answered

Using pdf to find threshold

I'm not entirely sure what you mean by "threshold", but maybe you are trying to identify the middle 95% of the distribution? If...

Using pdf to find threshold

I'm not entirely sure what you mean by "threshold", but maybe you are trying to identify the middle 95% of the distribution? If...

1 year ago | 0

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Answered

Anova-n outputs as not full rank. Returns NaN P-value.

The short answer is that you have to collect more data to fix this. Look here: >> crosstab(gX1,gX2,gX3) ans(:,:,1) = 7 ...

Anova-n outputs as not full rank. Returns NaN P-value.

The short answer is that you have to collect more data to fix this. Look here: >> crosstab(gX1,gX2,gX3) ans(:,:,1) = 7 ...

1 year ago | 0

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Answered

problem with the anova calculation

Just change one line to this mdl = fitlm(tbl,'pick~C_t')

problem with the anova calculation

Just change one line to this mdl = fitlm(tbl,'pick~C_t')

1 year ago | 0

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Answered

Can I find likelihood function of an objective function?

A lot depends on the details of these models, but one way to proceed would be in terms of the error scores. Consider the full mo...

Can I find likelihood function of an objective function?

A lot depends on the details of these models, but one way to proceed would be in terms of the error scores. Consider the full mo...

1 year ago | 1

Answered

ANOVA result No p-value.

The problem is that the full model has 90 parameters and predicts a separate mean for each of the 3*3*10 conditions. But you onl...

ANOVA result No p-value.

The problem is that the full model has 90 parameters and predicts a separate mean for each of the 3*3*10 conditions. But you onl...

1 year ago | 0

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Answered

I am having trouble with errors in the array used for anova analysis

Looks like g1 should be a numerical vector, not a cell array (i.e., square brackets instead of curly brackets). e.g., g1 = [1,2...

I am having trouble with errors in the array used for anova analysis

Looks like g1 should be a numerical vector, not a cell array (i.e., square brackets instead of curly brackets). e.g., g1 = [1,2...

1 year ago | 0

| accepted

Answered

How to fit lognormal distribution on my data

If the scores are in vector1 and the counts are in vector 2, you could fit like this by the method of moments (should be OK with...

How to fit lognormal distribution on my data

If the scores are in vector1 and the counts are in vector 2, you could fit like this by the method of moments (should be OK with...

1 year ago | 0

| accepted

Answered

How do I display Tiled Layouts properly?

I haven't used tiled layouts yet so this may be way off-base, but something like the following has solved similar scaling proble...

How do I display Tiled Layouts properly?

I haven't used tiled layouts yet so this may be way off-base, but something like the following has solved similar scaling proble...

1 year ago | 0

Answered

How do I calculate the signal to noise ratio of a signal without knowing the noise of the signal?

I'm not sure whether this fits your situation, but one way to estimate the noise is to subtract the average of the epochs from e...

How do I calculate the signal to noise ratio of a signal without knowing the noise of the signal?

I'm not sure whether this fits your situation, but one way to estimate the noise is to subtract the average of the epochs from e...

1 year ago | 1

| accepted

Answered

Poisson PMF using MATLAB

This might get you started... k = 0:17; pmf = poisspdf(k,4); figure; plot(k,pmf,'o-')

Poisson PMF using MATLAB

This might get you started... k = 0:17; pmf = poisspdf(k,4); figure; plot(k,pmf,'o-')

1 year ago | 0

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Answered

May I ask how I can find 95% confidence interval of skew_FP() from these codes?

LBUB = prctile(skew_FP(),[2.5,97.5]);

May I ask how I can find 95% confidence interval of skew_FP() from these codes?

LBUB = prctile(skew_FP(),[2.5,97.5]);

1 year ago | 0

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Answered

Using a specific number of digits

Maybe by "report k" you are referring to printing it, in which case this should work for k=1:100 fprintf('%03d\n',k) end

Using a specific number of digits

Maybe by "report k" you are referring to printing it, in which case this should work for k=1:100 fprintf('%03d\n',k) end

1 year ago | 0

Answered

How to computing confidence bounds of the regression model using the bootstrap method

I'm assuming that your figure shows t on the horizontal axis and y on the vertical. The problem is that bootci is giving you co...

How to computing confidence bounds of the regression model using the bootstrap method

I'm assuming that your figure shows t on the horizontal axis and y on the vertical. The problem is that bootci is giving you co...

1 year ago | 0

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Answered

How do I update an inherited property in both the SuperClass and SubClass simultaneously in real time?

The superclass/subclass relationship is a little different than you think. When you make SUP and SUB, these are completely diff...

How do I update an inherited property in both the SuperClass and SubClass simultaneously in real time?

The superclass/subclass relationship is a little different than you think. When you make SUP and SUB, these are completely diff...

1 year ago | 0

| accepted

Answered

Anova analysis with blocking

You can do this with fitlm as long as you want to test for the effect(s) of interest within a standard linear RCBD model. The h...

Anova analysis with blocking

You can do this with fitlm as long as you want to test for the effect(s) of interest within a standard linear RCBD model. The h...

1 year ago | 0

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Answered

Question about "gamcdf" code

To get the 75th percentile value, you need to use gaminv() rather than gamcdf. Also, the shape parameter comes first and scale ...

Question about "gamcdf" code

To get the 75th percentile value, you need to use gaminv() rather than gamcdf. Also, the shape parameter comes first and scale ...

1 year ago | 0

| accepted