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  1. 1

    MATLAB Matlab Matrix Multiplication Query in an fft application

    Hey everyone, first of all id just like to clarify this isnt a homework or coursework related problem, its part of my personal MatLab learning for future years. I obtained a nice little siganls and systems question off a friend, it looked fairly simple but ive come across a problem which i cant...
  2. 1

    Diagonal line plotting in C

    ok i see, yes thats a good formula but im not sure how it would be implemented into the code??? i have sex x = x1 this wouldnt work with this formula, i could pre determine the graident from the four points but im not sure what to do to get y2 to move vertically while y1 remains constant??
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    Diagonal line plotting in C

    this is quite a simple problem,what i am trying to do is plot a line between any two points on my image, i can plot horizontal lines fine. below is the part of my code to for the line... int x1 = 92, y1 = 35, x2 = 150, y2 = 55; //line between two points for (x = x1; x <= x2; x++)...
  4. 1

    2D image generator using C and nxview

    Thanks so much for the help, i was wondering if you could check out my updated version where i took your advise its also in programming and is called 2D image generator and modification using C, updated part 2 (drawing a line) thanks again!!
  5. 1

    2D image generator and modification using C, updated part 2 (drawing a line)

    hello, Part of a little project of mine consists of writing C code to build a image file in .ppm format which can be viewed by the simple program xnview. The image size is going to be 256 x 128. My code below generates a image with a smooth transtiton/graident between very dark red to light...
  6. 1

    2D image generator using C and nxview

    hello, Part of a little project of mine consists of using arrays, loops and writing files, in C to build a image file in .ppm format which can be viewed by the simple program xnview. The image size is going to be 256 x 128. I can use notepad to create simple images of flags ect. but am...
  7. 1

    Simple Functions Problem

    Homework Statement The relationship between the input x(n) and the output y(n) for the discrete System A is described by the expression y(n)=2x(n)-3x(n-1)+x(n-1) What is (i) the impulse response function h(n)? (ii) the frequency response function H(f)? (iii) the amplitude...
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