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Alka Nair

MathWorks

Aktiv seit 2014

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Engineer at MathWorks

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  • 3 Month Streak
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Beantwortet
How can I read a .json file?
fname = 'meta_Electronics.json'; fid = fopen(fname); raw = fread(fid,inf); str = char(raw'); fclose(fid); val = jsond...

mehr als 6 Jahre vor | 21

| akzeptiert

Beantwortet
ROC of multiclass classification in MATLAB
Hi, The PERFCURVE function can be used to plot the ROC for AdaBoostM2. Please see the documentation of function PREDICT, to...

etwa 9 Jahre vor | 1

Beantwortet
Adding proper label names to confusion matrix created with plotconfusion function:
Hi, >> p = plotconfusion(t,y) gives a figure object p which has 2 children , one is uicontrol and the other is axis. By ...

etwa 9 Jahre vor | 1

| akzeptiert

Beantwortet
How to plot a polygon in real time using the coordinates I receive from a gps receiver?
Hi, Please refer to the MATLAB File Exchange submission in the following link: http://uk.mathworks.com/matlabcentral/file...

etwa 9 Jahre vor | 0

| akzeptiert

Beantwortet
Plot a Time Serie of the price of a share
You can use time Series Objects to plot time series data. Please refer to the documentation at the following page: http://in....

etwa 9 Jahre vor | 0

Beantwortet
I bulit my first LSF cluster, now I need to add matlab to it
The page in the below mentioned link explains configuring cluster for platform LSF: http://in.mathworks.com/help/mdce/co...

etwa 9 Jahre vor | 0

Beantwortet
Generate binary image of geometric shapes?
Hi, For generating geometric shapes in binary images use STREL to create the structuring element, for example, suppose you ...

etwa 9 Jahre vor | 2

Beantwortet
I have a problem with setup about "c++ to use matlab"
Hi, mex -setup takes a language setting only from MATLAB 8.4(R2014a). Please refer to the following release notes: http:/...

etwa 9 Jahre vor | 0

Beantwortet
Interpolation between three sets of data
Hi, Interpolation can also be done for multidimensional data. Please refer to the documentation page for INTERP2 and INTERP...

etwa 9 Jahre vor | 0

Beantwortet
why do i get the segmentation error while running a mex file? how do i solve this?
Hi, Please see the debugging steps mentioned in the following page: http://www.mathworks.com/matlabcentral/answers/97261-...

etwa 9 Jahre vor | 1

Beantwortet
How to crop image containing number on license plate?
Hi, You could use the function IMCROP to crop images. Its an interactive tool in which you can use resizable rectangles to d...

etwa 9 Jahre vor | 0

Beantwortet
How to use mvnrnd function ?
The documentation of MVNRND suggests that the syntax is >> r = mvnrnd(MU,SIGMA,cases) and r = mvnrnd(MU,SIGMA,cases) returns...

mehr als 9 Jahre vor | 0

| akzeptiert

Beantwortet
Where can I find this model
Hi Yujia, Both the models that you have mentioned are available in MATLAB 8.2(R2013b) and they are available in Matla...

mehr als 9 Jahre vor | 0

Beantwortet
Run Queue of Operations in Parallel
Hi Royi Avital, The BLOCKPROC function from the Image Processing Toolbox processes the images by applying the function ...

mehr als 9 Jahre vor | 0

Beantwortet
Help with saving a .txt file
Use FSCANF function to read data from text file to MATLAB. Please refer to the following link to find information on FSCANF: ...

mehr als 9 Jahre vor | 0

Beantwortet
webcam support problem - on windows xp system
I understand that you are getting an error using the webcamlist command in the command window. The Webcam feature uses Media Fou...

mehr als 9 Jahre vor | 0

| akzeptiert

Beantwortet
How to convert results in table format?
I understand that you would like to convert the arrays to table. Please refer to the following documentation for ARRAY2TABLE at:...

mehr als 9 Jahre vor | 0

| akzeptiert

Beantwortet
how to calculate the AUC of a classifier
I understand that you would like to know how to find the Area under the Curve for ROC using MATLAB. If you have the true positiv...

mehr als 9 Jahre vor | 0

Beantwortet
Compare two image with different size
I understand that you would like to compare two images of different size. Please refer to the documentation of IMSHOWPAIR at the...

mehr als 9 Jahre vor | 0

| akzeptiert

Beantwortet
SVM classification for satellite image
You could refer to the following link in documentation to understand how to perform classification using SVM in MATLAB: http:...

mehr als 9 Jahre vor | 0

Beantwortet
"Error using quiver"???
When the input argument to DOUBLE function is a symbolic expression, MATLAB will output the error message you received. In t...

mehr als 9 Jahre vor | 0

Beantwortet
creating a custom color map
The 'colormapeditor' helps in displaying the current figure's colormap and customizing it. To find more information about colorm...

mehr als 9 Jahre vor | 1

Beantwortet
Fitting Tool or Time Series Tool
I understand that you would like to predict housing prices based on a data set that you already have. If the data is time depe...

fast 10 Jahre vor | 0

| akzeptiert

Gelöst


Find the longest sequence of 1's in a binary sequence.
Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

fast 10 Jahre vor

Gelöst


Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

etwa 10 Jahre vor

Gelöst


Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

etwa 10 Jahre vor

Gelöst


Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

etwa 10 Jahre vor

Gelöst


Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

etwa 10 Jahre vor

Gelöst


Target sorting
Sort the given list of numbers |a| according to how far away each element is from the target value |t|. The result should return...

etwa 10 Jahre vor

Gelöst


The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

etwa 10 Jahre vor

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