Matlab

aligning backbone atoms using 'pdbsuperpose'
I'm trying to align alpha carbons of two structures, but I cant find a way to pass atom name argument to it, just the model number, and chain ID. Is there a way to do this? Thanks, Ben ... 17 May 2010 01:35

solving quadratic equation
Hi, I would like to solve quadratic equations that are in the form Ax^2 + Bxy + Cy^2 + Dx + Ey + F = 0 If I use solve command how to pass the parameters of this equation (A, B, C, D, E, F) to the command. So I mean that there is a for loop and these parameters change in each iteration.... Thanks in advance... 17 May 2010 23:28

Class Diagram (e.g. UML, etc)
Hi, I'm wondering if there is a way or a tool in existence to automatically generate some class meta data. For example, Matlab has inbuilt functionality to do this if you type doc classname but i'm not sure how to pipe this to a printer (or something along those lines). Ultimately, I'm hoping someone h... 16 May 2010 21:12

Help with the Composite Trapozoidal and Simpson Rule
I am having problems deciphering the John Mathews and Kurtis D Fink Composite Trapezoidal and Simpson's Matlab Program when I use the program I keep getting function undefined. Can you send me an example on how to use the MATLAB programs. In case you do not know the program the first one is the Simpson and the second ... 16 May 2010 21:12

Plot both signal and decimated signal on same axis
Hi all, I designed a sigma-delta ADC and now I want to plot both input sine wave and the output sine wave from the decimator on the same axis. Is there any way to "fix" the decimated signal to the original time, or maybe there is a better and more specific way of doing this. Any input will be appreciated. Thank ... 17 May 2010 01:35

Setting object properties of objects stored in cell
Hello, I need to put some labels at axes and control their visibility state. Below are some basic question about speeding up the itteration/vectorising the process. i.e. Following code makes the labels and putts them in a cell. ------- x=0; y=0; num_forces=5; lbs_forces = cell(1, num_forces); for i=1:num_forc... 16 May 2010 20:07

Submatrix manipulation
Hi, I have a submatrix defined as: cur = secondImage(5:8, 5:8); And a matrix with the coordinates required: ScbN = [5 8 5 8; 5 8 9 12; 1 4 9 12; 1 4 5 8;... 1 4 1 4; 5 8 1 4; 9 12 1 4; 9 12 5 8; 9 12 9 12]; Now, I would like to use a loop which in turn takes the four coordinates from ScbN and place... 17 May 2010 19:06

Performance issues in processing
Hi, I am experiencing performance issues processing a 18x5500 matrix with daily reading reading of 200 devices. The processing involves computing certain metrics on device readings on dat T+0 and rank them, on day T+1 using the ranking perform another set of calculations on readings. While I have implemented this us... 17 May 2010 11:18

linear fit with different standard deviations at each point
Hi All, I have a set of x and y and known standard deviations for each y. I need to fit, y=m*x+c along with the standard deviations. On the other hand, I need to use weighted linear fit with different standard errors for each y. I need help in solving it. Thanks in advance. ... 17 May 2010 08:00

image processing
Hi im working on signature verification..i have a set of 100 images in .bmp format..im doing the pre-processing step where i need to read,resize and store the images in same size and element before i can do pattern classification..need urgently..plz any help would be appreciated...tq ... 18 May 2010 10:20