Matlab

dc motor: 1/Js+b help
Hi all! I am working on a motor model in Simulink. I externally calculated b and J, and I would like to build 1/(Js + b), shown incorrectly (dividing etc.) in the picture: [IMG]http://i792.photobucket.com/albums/yy210/akosodry/motorhelp.jpg[/IMG] Can someone help me in building? Thx a lot! ... 14 Jul 2010 06:35

Extracting subvector between boundary
Hi, I was wondering if anyone knows a quicker way to compute the following: C = A(A >= B(1) & A < B(2)) A is a large vector. B(1) is lower boundary B(2) is upper boundary. I have this repeating in a loop several thousand times (each with different boundary conditions) in my code and this appears to be the b... 20 Jul 2010 02:41

Invalid handle object error in GUI
Im making a GUI and have an error come up: "???Error using ==> set Invalid handle object. Error in ==> battery_gui>initialize_gui at 78 set(handles.batteryCapacity, 'String', 200)" I have pasted the piece of code that the error is coming from below : --------------------------------- function initializ... 14 Jul 2010 13:11

Making some parts of image fully transparent
My program superimposes two images and makes the topmost image partly transparent. However, I would like some parts of the topmost image to be fully transparent. In my images, these pixels have the value zero. So how can I put different transparency rates on different parts of the image? ... 14 Jul 2010 05:30

Invalid Handle object in GUI
function initialize_gui(fig_handle, handles, isconfirm) %Set up with values handles=handles; set(handles.batteryCapacity, 'String', 200) set(handles.cellNum, 'String', 98); set(handles.maxDischarge, 'String',600); set(handles.maxRecharge, 'String', 400); handles.batteryCapacity=200; handles.cellNum=98; ... 14 Jul 2010 04:25

Incorrect Sound Pressure Level from FFT in Matlab
Rune Allnor <allnor(a)tele.ntnu.no> wrote in message <3dab608e-d1bf-4015-827b-b7fc3f0fbab1(a)r9g2000vbk.googlegroups.com>... The factor 2'ish issue (the DC and nyquist components must be treated separately, as they only appear once in the spectrum) is one of a large number os issues that must be handled correctl... 12 Aug 2010 06:01

position control of x y z direction
I have a problem to write a code in matlab to control AUV to the position to x y and z example: step 1: from initial condition to x position step 2 : from x position to y position step 3 : from y position to z position before this, I done separate controller for x y and z position. N... 14 Jul 2010 03:21

set/get_param of SL gain block
Hi, I like to parametrize my SL Gain block's Parameter Attributes: 'Parameter minimum:' 'Parameter maximum:' 'Parameter data type', e.g. to fixdt(1,16,13) How to get/set_param of those in detail? Thanks, Olaf ... 14 Jul 2010 03:20

plotting 4D data
Hello, I'm relatively new to Matlab, and trying to visualize the pdf of a 3-dimensional gaussian mixture model. I started with 3dim data, and fit this using gmdistribution.fit() to 3 components. So now I have a gmdistribution object which is the result of the fit. I manage to create a 3dim "grid" (using for loo... 14 Jul 2010 03:20

how can show a symbolic variable in decimal form?
Hi everybody, I want to convert a symbolic varibale in to decimal form, for this I have used below command: beta=sym(beta,'d'); but there is an error like this: ??? Error using ==> sym.sym Second argument d not recognized. Error in ==> deepak3 at 31 beta=sym(beta,'d'); thanks for helping me ... 14 Jul 2010 09:50