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Alka Nair

MathWorks

Active since 2014

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Answered
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...

ungefär 7 år ago | 21

| accepted

Answered
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...

mer än 9 år ago | 1

Answered
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 ...

mer än 9 år ago | 1

| accepted

Answered
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...

mer än 9 år ago | 0

| accepted

Answered
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....

mer än 9 år ago | 0

Answered
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...

mer än 9 år ago | 0

Answered
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 ...

mer än 9 år ago | 2

Answered
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:/...

mer än 9 år ago | 0

Answered
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...

mer än 9 år ago | 0

Answered
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-...

mer än 9 år ago | 1

Answered
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...

mer än 9 år ago | 0

Answered
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...

mer än 9 år ago | 0

| accepted

Answered
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...

mer än 9 år ago | 0

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

mer än 9 år ago | 0

Answered
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: ...

mer än 9 år ago | 0

Answered
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...

mer än 9 år ago | 0

| accepted

Answered
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:...

mer än 9 år ago | 0

| accepted

Answered
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...

mer än 9 år ago | 0

Answered
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...

mer än 9 år ago | 0

| accepted

Answered
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:...

mer än 9 år ago | 0

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

mer än 9 år ago | 0

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

mer än 9 år ago | 1

Answered
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...

ungefär 10 år ago | 0

| accepted

Solved


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...

mer än 10 år ago

Solved


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...

mer än 10 år ago

Solved


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 = ...

mer än 10 år ago

Solved


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

mer än 10 år ago

Solved


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...

mer än 10 år ago

Solved


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...

mer än 10 år ago

Solved


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".

mer än 10 år ago

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