i have an image of lena whose size is 512*512. i want to resize it to 256*256 ?

close all;
clear all;
clc;

v=imread('lena512.pgm');
v=imresize(v,[256 256]);

[Stephen23]

@kitty varghese: what is your question? Your code seems okay.

[kitty varghese]

after the execution of the below code. i m not able to get the image of lena512.pgm .(imshow(v)). all i get is a empty figure.

close all; clear all; clc; % a=zeros(512,512); % g=zeros(512,512); v=imread('lena512.pgm');

% v=imresize(v,[256 256]); sW=0.5 showflag=1 % v=v/max(v(:)); % v=imread('lena512.pgm');

% vdim=size(v); v=double(v); vdim=size(v,1); samples=size(v,2); rdim=250 W=double(abs(rand(vdim,rdim))); h=double(abs(rand(rdim,samples))); h = h./(sqrt(sum(h.^2,2))*ones(1,samples));

if ~isempty(sW), L1a = sqrt(vdim)-(sqrt(vdim)-1)*sW; for i=1:rdim, W(:,i) = projfunc(W(:,i),L1a,1,1); end end

[Jan]

@kitty: Do you see, that the code is not readable? Please use the "{} code" button, because it should be your interest to post readable code.

The posted code does not contain any command to display an image. Therefore it is not clear, how the code is related to your question. Please do not let the readers guess, what your problem is.

[Image Analyst]

Other than getting it's dimensions, the badly-named "v" does not seem to be used. Your resize code is correct though.