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Mario Trevino


Johns Hopkins University

Last seen: 1 jour il y a |  Actif depuis 2011

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Rotating sphere: kinetic depth effect
i wonder whether any of you have code available in Psychtoolbox to create the illusion of rotating dots. Specifically, I am look...

1 jour il y a | 1 réponse | 0

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Question


Need to create audio signal for perceptual task
Hi there everyone, Im working with a perceptual task. Imagine we have a dot that is projected on your screen. On different trial...

8 mois il y a | 1 réponse | 0

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Can someone help me open a Simulink file from an old version of matlab? (probably around year 2000)
Hi there everybody I wonder if someone of you could help me open an old Simulink file and store it in a more recent version?

presque 2 ans il y a | 1 réponse | 0

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Question


Password protect mat files
Hi there everybody, Im writing an application and I would like to password protect the generated mat files... is there an easy w...

presque 2 ans il y a | 2 réponses | 1

2

réponses

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Problems with urlread/webread
Hi there everyone Im using a function to download stock prices from yahoo finance. The function works well with most of the tic...

plus de 4 ans il y a | 1 réponse | 0

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INTRADAY STOCK PRICES WITH A FREE PROVIDER?
I wonder if there is a way to access intraday stock prices at no cost from a provider? Previously we could do that directly fro...

plus de 5 ans il y a | 1 réponse | 0

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Question


cannot send an email through matlab
Im not being able to send an email thgourh matlab.... My google account allow external applications to use it.... here is the c...

plus de 5 ans il y a | 1 réponse | 0

1

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Question


LifeCam Webcams Crashing in Matlab 2016a after windows update
Hi everyone Im having a serious problem trying to use my Microsoft LifeCam Webcams through MATLAB 2016a, the system can detect ...

presque 6 ans il y a | 1 réponse | 1

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VERY SLOW aqcuisition of video frames using snapshot function compared to windows camera
Im trying to acquire videos using Matlab and Microsoft webcam with maximum resolution, yet the effective sampling frequency is e...

plus de 7 ans il y a | 1 réponse | 1

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Question


Adding a special boundary condition to an ODE
Hi everyone! Im solving an ODE using fmincon and a cost function. Im able to find the best parameters of the model and Im happy...

plus de 9 ans il y a | 1 réponse | 0

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displaying SET operations with MATLAB
hi everyone Im performing some set operations with MATLAB and I wonder wherther you know of any nice application which I could ...

plus de 9 ans il y a | 1 réponse | 0

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Question


Yaw, Pitch and Roll
hi Everyone I have a video where I record, on each frame, the location of a little plaque with 4 colored dots (different color ...

environ 10 ans il y a | 2 réponses | 0

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réponses

Question


A hidden variable problem?
Hi everyone, I have a new problem in my hands and dont know the best way to approach it. I have the mRNA expression levels for ...

plus de 10 ans il y a | 1 réponse | 0

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Question


Display precision vs actual precision
Hi everyone We are running some simulations in MATLAB and storing the results afterwards. Yet, we are concerned that the actual...

plus de 10 ans il y a | 2 réponses | 0

2

réponses

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how to send me an email from matlab running on another computer?
any suggestions?

plus de 10 ans il y a | 2 réponses | 0

2

réponses

Question


detecting computer ID from matlab
Hi everyone, I wonder if any of you can tell me how to get the computer ID from within matlab? I want to make a compiled functi...

plus de 10 ans il y a | 2 réponses | 0

2

réponses

Question


Cell Arrays vs Matrices
Gentlemen, are cell arrays faster or slower than Matrices to store numbers? thanks in advance! mario

plus de 10 ans il y a | 1 réponse | 0

1

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Question


homogeneous distribution of particles over the surface of a sphere
hi everyone, I have a very simple question Im using random numbers from a uniform distribution (range from 0 to 2*pi) to create...

plus de 10 ans il y a | 1 réponse | 0

1

réponse

Question


Is there such a thing as an unsupervised optimized sampling?
I have sigmoidal processes which I want to sample with, say, 10 points each. I dont know, a priori, the shape of each sigmoid....

presque 11 ans il y a | 1 réponse | 0

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Question


Creating synthetic images with controlled properties?
Hi everyone, Im trying to find out if there is a clever way to mathematically generate a set of different images with some key s...

presque 11 ans il y a | 2 réponses | 0

2

réponses

Question


how to open many matlab instances from matlab?
hi there, I want to make a function that opens multiple matlab instances (from within matlab) and then starts running different ...

environ 11 ans il y a | 2 réponses | 0

2

réponses

Question


RGB colors in scatter3
Im trying to plot n [X,Y,Z] dots in 3d with their colors given by C which is a nx3 matrix describing the RGB colors for each dot...

environ 11 ans il y a | 1 réponse | 0

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réponse

Question


how to get name of a function (within the function)
Wise gentlemen: how do I get the name of a function within the function?

plus de 11 ans il y a | 4 réponses | 0

4

réponses

Question


Renaming files without preserving their date and creation time
I want to rename files but without preserving their original date and creation times.So far, Ive tried two options: OPTION 1:...

plus de 11 ans il y a | 1 réponse | 0

1

réponse

Question


Can you help me with a logistic regression?
I need to solve the following system: log(pR,i/pL,i)=SIGMA{ alpha_j [(rR,i-j)-(rL,i-j)]}+SIGMA{ beta_j [(cR,i-j)-(cL,i-j)]}+g...

plus de 11 ans il y a | 1 réponse | 0

1

réponse

Question


Recover image from current figure without saving it
Suppose I have: figure imshow(matrix) hold on scatter(x2,y2,size2,color2, 'filled') axis square axis off ...

plus de 11 ans il y a | 1 réponse | 0

1

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Réponse apportée
How to make a set of RGB color combinations
Hey there, thanks for your help Im solving an image processing problem, and Im planning to create multiple masks with different...

presque 12 ans il y a | 0

Question


How to make a set of RGB color combinations
I want to build a finite set of RGB colors, say 100, which maximices the overall differences (Euclidean distance) between each o...

presque 12 ans il y a | 3 réponses | 1

3

réponses

Question


How to build a rotationally symmetric mask?
Hi everyone, suppose I have 'p' given by a generalized Gaussian function and want to make a rotationally symmetric mask of it (i...

presque 12 ans il y a | 1 réponse | 0

1

réponse

Question


Need help to classify a variable for parallel computing
I have something like: parfor .... [blobCentroid(i-chunk,1:2),blobOrientation(i-chunk,1)]=blob_analysis(vidFrame_bn);...

environ 12 ans il y a | 1 réponse | 0

1

réponse

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