Community Profile

photo

Mario Trevino


Last seen: 1 month ago

Johns Hopkins University

32 total contributions since 2011

Contact

Mario Trevino's Badges

  • First Review
  • Thankful Level 2

View details...

Contributions in
View by

Question


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...

11 months ago | 0 answers | 0

0

answers

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...

11 months ago | 1 answer | 0

1

answer

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 ...

1 year ago | 0 answers | 0

0

answers

Question


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...

2 years ago | 0 answers | 1

0

answers

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...

4 years ago | 0 answers | 0

0

answers

Question


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 ...

5 years ago | 0 answers | 0

0

answers

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 ...

5 years ago | 2 answers | 0

2

answers

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 ...

5 years ago | 0 answers | 0

0

answers

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...

5 years ago | 2 answers | 0

2

answers

Question


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

5 years ago | 2 answers | 0

2

answers

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...

5 years ago | 2 answers | 0

2

answers

Question


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

5 years ago | 1 answer | 0

1

answer

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...

6 years ago | 1 answer | 0

1

answer

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....

6 years ago | 0 answers | 0

0

answers

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...

6 years ago | 2 answers | 0

2

answers

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 ...

6 years ago | 2 answers | 0

2

answers

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...

6 years ago | 1 answer | 0

1

answer

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?

7 years ago | 4 answers | 0

4

answers

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:...

7 years ago | 1 answer | 0

1

answer

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...

7 years ago | 1 answer | 0

1

answer

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 ...

7 years ago | 1 answer | 0

1

answer

Answered
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...

7 years ago | 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...

7 years ago | 3 answers | 1

3

answers

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...

7 years ago | 1 answer | 0

1

answer

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);...

7 years ago | 1 answer | 0

1

answer

Answered
VideoReader.m and read.m in MATLAB 64 bit
NICE! little bug, simple solution, big headache. thank you very much Walt!

7 years ago | 0

Question


VideoReader.m and read.m in MATLAB 64 bit
read function is crashing at line 91 even after updating line 91 if( ~isempty(obj.NumberOfFrames) ) with if( ~isem...

7 years ago | 2 answers | 0

2

answers

Question


Image Segmentation of cells
Hi everybody, Im trying to detect cells in images for which Im using some functions based on watershed segmentation. However, th...

7 years ago | 1 answer | 0

1

answer

Question


Optimization of two linear models with constraint
I have a dataset which is a 'v-shaped' pattern of dots: y_observed and want to adjust two linear regressions with a turning poin...

7 years ago | 1 answer | 0

1

answer

Question


returning the indexes of an image displayed with a specific colormap
hi, does anyone know hot to get the numeric indexes of a displayed image with a specific user defined colormap??? for example...

7 years ago | 1 answer | 0

1

answer

Load more