Eric Lin

MathWorks

Active since 2015

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Answered
NaN in Neural network training and simulation; tonndata
This answer may be a good start: <http://www.mathworks.com/matlabcentral/answers/92319-how-are-nan-values-in-the-input-data-for-...

9 years ago | 1

Answered
Speed up the pseudoinverse calculation
Depending on the dimensions of your matrices, applying the "0" or 'econ' argument to svd may speed up your calculation. <http://...

9 years ago | 0

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principal strains using eig function
What is happening is the web app is displaying the eigenvectors by row whereas MATLAB is displaying them by column. The relative...

9 years ago | 0

Answered
Auto-scrolling in Command window?
Hi LadyMacbeth, I work at MathWorks and am aware that other customers have reported this issue and that typically restarting ...

9 years ago | 0

Answered
Discrete weights with neural network toolbox
Constraining network weights is not possible with the built-in Neural Network Toolbox functions as the training algorithms are a...

9 years ago | 0

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Why can't I submit to support?
Hi Paul, We're currently experiencing some temporary issues internally with handling support requests coming from the MATLAB ...

9 years ago | 0

Answered
Calculating weekly mean from daily data.
First, I would recommend finding a reliable method of determining the week number of a particular date. If you have access to R2...

9 years ago | 1

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Answered
Matlab unfolds folded code when I leave an open for/if loop (temporarily omit the "end" while working)
This is a known bug in MATLAB. The only workaround right now is to disable code folding for the particular constructs that exper...

9 years ago | 2

Answered
How to Decipher a Biplots Observation
The "Observation" number simply corresponds to the row number of the original data point. That is, you will have 10,000 observat...

9 years ago | 0

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Answered
how to have persistent http session in MATLAB?
This functionality does not exist in MATLAB. Each "urlread" or "webread" call will create and close its own HTTP connection.

9 years ago | 0

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Answered
How can I hide part of the markers behind the x-axis?
I assume you are wanting to crop any part of the markers that lie below the X-axis. While there is no built in method to do this...

9 years ago | 0

Answered
How to fit the multiple line on the image
Without more details regarding your use case or more sample images, it's difficult to give specific recommendations, but one pos...

9 years ago | 0

Answered
Solve function returns Warning and empty matrix
To add to Walter's answer, the "==" notation was introduced in R2012a: <http://www.mathworks.com/help/symbolic/release-notes.htm...

9 years ago | 0

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How can I make an object declared within a function persistent?
As Guillaume notes, we'll need the code in question to help you further. However, it is important to note that persistent var...

9 years ago | 0

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Answered
(Odd) GUI slider behavior
Assuming the information you provided is correct, your step size is greater than the range of your slider. In newer releases of ...

9 years ago | 0

Answered
Excel 2013 excel link right click options missing
My recommendation would be to review the <http://www.mathworks.com/help/exlink/installing-the-spreadsheet-link-ex-software.html ...

9 years ago | 0

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What's F(a|b) in the MuPAD ode::solve output?
It appears to be the <http://www.mathworks.com/help/symbolic/mupad_ref/ellipticf.html Incomplete elliptic integral of the first ...

9 years ago | 0

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Answered
Issues getting dual y-axis ticks/values to line up
The following submissions on the MATLAB File Exchange may be of help: <http://www.mathworks.com/matlabcentral/fileexchange/74...

9 years ago | 0

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Answered
Plotting data from a table
See <http://www.mathworks.com/help/matlab/matlab_prog/calculations-on-tables.html#zmw57dd0e22901 Find the Average Across Each Ro...

9 years ago | 0

Answered
R2015a no longer sets the path from pathdef.m upon startup
The steps you described should allow you to save custom folders to the path. One suggestion is to check if there are multiple pa...

9 years ago | 0

Answered
Automatically rehash toolbox cache ONLY if out of date
"rehash toolboxcache" really only needs to be run when files are added to _matlabroot/toolbox_ folders. See <http://www.mathwor...

9 years ago | 0

Answered
Problem to access opendap data behind https urls
Hi Julien, I work at the MathWorks and can confirm that, unfortunately, reading OPeNDAP sources over https is currently not p...

9 years ago | 0

Answered
R2105a crashing after sleep/display unplug on Yosemite
There is a <http://www.mathworks.com/matlabcentral/answers/126903-why-does-matlab-r2013b-r2014a-crash-when-using-mac-os-x known ...

9 years ago | 1

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Answered
Remove larger connected components based on pixels
<http://www.mathworks.com/matlabcentral/answers/43221-blob-analysis-subtract-large-blobs-from-image-keeping-small-blobs-to-creat...

9 years ago | 0

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problem with commands poly2cw and polybool - Mapping Toolbox
Besides writing your own implementations, it may be worth checking out the <http://www.mathworks.com/help/matlab/computational-g...

9 years ago | 0

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Does MATLAB support the parallelization of supervised machine learning algorithms?
As far as available tools within MATLAB, the following doc sections describe parallel-supported ML functions, which include some...

9 years ago | 0

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how do i plot a delay differential equation
The output of MATLAB's dde solvers is a structure that includes as fields the selected mesh and approximations to y(x) at the se...

9 years ago | 0

Answered
Error: Error using surf (line 78) Data dimensions must agree
As Jan Simon noted, we'll need more information to fully help you. However, based on your provided code, I'm going to assume ...

9 years ago | 0

Answered
different formulas for gaussian fitting?
"fit" and "cftool" fold the "2" term in the exponent denominator into the estimate for "c1". That is, the "c1" estimate fitted b...

9 years ago | 0