You can write n-linear equations as one matrix equation to solve it. Here you can find great example: http://blogs.mathworks.com/pick/2007/09/13/matlab-basics-video-solving-linear-equations/ (video!) See also these pages:http://en.wikipedia.org/wiki/System_of_linear_equationshttp://en.wikipedia.org/wiki/Matrix_equation 2 solved set of n-linear equations in matlab [closed]
Using a mask defined by any of the “imroi” functions – imfreehand and imellipse included, you can use roifilt2 to filter just the roi using a given filter or function. First, define the area: imshow(I); %display your image h = imfreehand; % now pick the region BW = createmask(h); %makes BW mask Then, use roifilt2 … Read more
It’s impossible to directly recover a colour image from the grey scale version of it. As correctly said by @Luis Mendo in the comments, the needed information are not physically stored there. What you can do is try to come up with a mapping between intensity level and colour, then play around with interpolation. This … Read more
surf is a function which displays a quad-mesh, from your output I can only tell that you did not input the data in the right order or shape, it seems to randomly connect the wrong points. In the simplest case (a regular quad-mesh) means that each column of X contains the same value and each … Read more
The old traineddata files can be found at https://sourceforge.net/projects/tesseract-ocr-alt/files/. solved Matlab – OCR Languages Support Package Installation [closed]
every time you call plot matlab will clean the canvas before drawing the new function, unless you are focused on a window where you called hold on, which will substantially tells Matlab to keep the old stuff and superimpose the new drawing. x = 0:0.001:10 y1 = x.^3; y2 = 3.^x; plot(x, y1); hold on; … Read more
In your commented line, % n=[0:10:100]; you create a vector with values from 0 to 100, with spacing 10, ie [0 10 20 30 40 50 60 70 80 90 100]. With your uncommented line, n=[0 3 5 10 50 100]; you have the values you specify. Since they’re not the same input, you won’t … Read more
You’ve basically outlined the right approach which I’ll summarize here: 1) Do the 2D FFTs. 2) Multiply them by a weighting factor. If you’re FFTs are in (Real, Imaginary) form, multiply both components by the weight, and if (Magnitude, phase) just multiple the magnitude. If you’re interested in just high and low frequencies, this will … Read more
If you want the output to give the alphabetical order of the letters, 1 to 26, you can do this: str = “ABCXYZ”; mat = char(str); ds = double(mat) – 64 which gives ds = 1 2 3 24 25 26 solved I want to convert a string containing letters to a double in matlab … Read more
A bit more efficient than your code: histogram = zeros(1,256); for value = 1:256 % loop through possible values histogram(value) = histogram(value) + length(find(F(:)==value)); end Note that this code makes a histogram for values from 1 to 256. For grayscale images you might need one from 0 to 255. But I’ll let you change this … Read more
How about this x = linspace(-10, 10, 1000); fx = ( x > -0.5 ) & ( x < 0.5 ); figure; plot( x, fx ); 0 solved f(x) = 1 for -0.5
Why don’t you simply use regionprops with ‘Image’ property? img = imread(‘http://i.stack.imgur.com/zpYa5.png’); %// read the image bw = img(:,:,1) > 128; %// conver to mask Use some minor morphological operations to handle spurious pixels dbw = imdilate(bw, ones(3)); lb = bwlabel(dbw).*bw; %// label each character as a connected component Now you can use regionprops to … Read more
Input A of class cell and input B of class char must be cell arrays of strings, unless one is a string. This means that every entry in the cell must be a string, and in this case it’s not. If your cell array contains numeric values, or even an empty matrix, you will get … Read more
I could not maintain stably the userpath in the system so a solution which works in the beginning of the functions checkSystemMemory(); %% TODO Virtual memory; enable virtual memory on HDDs. % http://askubuntu.com/q/799834/25388 home=char(java.lang.System.getProperty(‘user.home’)); % all systems if (isempty(userpath)) userpath(fullfile(home, ‘Documents/bin/matlab/’) ) % list software locations in the project location addpath(fullfile(home, ‘Documents/Math/’) ) % list … Read more
Each of the parameters are being used to find particular X and Y values. O changes from 0 to pi in steps of pi/8 while Vo, t and g remain unchanged. The t variable is simply an array from 0 to 5 in steps of 1 and so there are 6 time points defined all … Read more