Dear all: I have some questions about times. As far as I know, times will "get process and waited-for child process times". so if the child is not finish or dead, this function will cause the deadlock, right? appreciate your help, miloody miloody wrote: > As far as I know, times will "get process and waited-for child > process > times". > so if the child is not finish or dead, this function will cause the > deadlock, right? No, it just means that the child time values returned by times() do not include the times of children that have not been waited for. ...

I want to use the quad command to integrate a user defined function which takes 3 variables as inputs. Two of these variables are parameter values which will be given. I want the computer to integrate over the third variable. How do we do this in Matlab? Thanks. By the way, I used Matlab 6, r12. thanks. Onur wrote: > > > I want to use the quad command to integrate a user defined > function > which takes 3 variables as inputs. Two of these variables are > parameter values which will be given. I want the computer to > integrate over the third variable. How do we do this ...

If I have a function A.m which will be excecuted 10 times. In this function there is another function B.m How can I just excecute B.m only during the first time A.m is called? i.e. if A.m is called for the second time , B.m will not run. Thank you for any help Mike One way to do this is to use a persistent variable in A.m: function A(arg1) persistent first_call if isempty(first_call) % call function B.m here first_call = 0; % initialize so it will no longer be empty end % do rest of function A() here end Note that this mechanism will be reset if you run the clear command, e...

I know I can use the date() function to calculate and format a future date ie. today = date('Base') futureday = today + 15 futuredate = date(, futureday, 'Base') My question is, can I do something similar with the time() function? I want to add some seconds to the number of seconds since midnight and format the time. now = time('Seconds') futuresec = now + 150 futuretime = time(, futuresec, 'Seconds') I get the following error 93 +++ futuretime = time(, futuresec, 'Seconds') IRX0040I Error running TESTTHIS, line 93: Incorrect call to routine Can any...

I am doing the following in my C program clock_t tstart, tend; tstart = clock(); /* ................ Body of Code ............... */ tend = clock(); runtime = ((double) (tend - tstart) / (double) CLOCKS_PER_SEC); I am getting negative values for runtime. Any suggestions where I am going wrong? Thanks for the help. - R . Raj <rajeev.namboothiri@gmail.com> wrote: > I am doing the following in my C program > clock_t tstart, tend; > tstart = clock(); > /* ................ > Body of Code > ............... */ > tend = clock(); > runtime = ((double) ...

The answer to the how do I talk in polynomial time question is this is question time polynomial in talk I do how the to answer the:!? http://meami.org 'Do it for the kids!' ...

I want to write a function that each time it gets called, it returns a random choice of 1 to 5 words from a list of words. I can write this easily using for loops and random.choice(wordlist) and random.randint(1, 5). But I want to know how to do this using itertools, since I don't like manually doing stuff like: phrase = list() for i in random.randint(1, 5): phrase.append(random.choice(wordlist)) It just seems slow. All advice welcome. TIA Matt -- A better way of running series of SAS programs: http://tplus1.com/wilsonwiki/SasAndMakefiles Matthew Wilson a �crit ...

Hi all, Thinking about extended DateTime functions for GTM programs. First limitation seems to be that we have days and seconds but no milliseconds in a $H variable. This isn't particularly helpful for accurate timing of functions / modules. Would a GetDateTime function be useful that returned Horolog format in [days],[second].[milliseconds]? Would you want to do this in "current locale" and also in "UTC"? For example: Log files, events recorded in UTC? Would a string DateTime format of [Century][Year][Month][Day]T[Hour]: [Min]:[Sec].[milliseconds] be useful ie: like...

Hi group, I'm interested if there's another way than using eval in this situation: a code has to be generated (and compiled) at run-time. Say, to solve a sparse system of equations x=Ax+b using an iterative algorithm I might have a specific function to compute Ax+b with A, b hard-coded inside. I mean, not having a matrix A and a vector b explicitely. If A, b were known at compile-time, we'd use macros. But what if A, b have to be computed at run-time? I can construct nested lists representing a lisp function to compute Ax+b and feed it to eval. My question, are there other techniqu...

Hi there, I'm pretty new to this forum so please tell me if this doens't belong here, but I have a problem with inserting the following 'loop' into matlab: I want to run the function as follows: L(1) = 4*sqrt(2) L(2) = 8*sqrt(2-sqrt(2)) L(3) = 16*sqrt(2-sqrt(2+sqrt(2))) L(4) = 32*sqrt(2-sqrt(2+sqrt(2-sqrt(2)))) ... and so on I already came up with something but I cannot get the function in function working. a = 0; for i = 1:4 L = (2^(i+1))*sqrt(2 + (-1)^(i+1)*a) a = L/(2^(i+1)) end I hope somebody can help! Thanks Okay stupid it should be the fo...

Hello I need your help I would llike to know how can I use a Matlab function, whose inputs varies with time (real time function), in simulink. Thank you in advance Hiba ...

What is supposed to happen if the content of arg-2 does not agree with the format in arg-1 ? eg. arg-1 "hhmmss" arg-2 "13:30:01" Roger "Roger While" <simrw@sim-basis.de> wrote in message news:eoj0ui$bpd$02$1@news.t-online.com... > What is supposed to happen if the content of arg-2 does not agree > with the format in arg-1 ? > eg. > arg-1 "hhmmss" > arg-2 "13:30:01" ISO/IEC 1989:200x WD 1.6, page 601, "The rules for a function may place constraints on the permissible values for arguments in order to permit mean...

I want to create a list of function. Here is my code: In [9]: a = [] In [10]: for i in range(4): ....: b = lambda : i**2 ....: a.append(b) ....: ....: In [11]: for f in a: ....: f() ....: ....: 9 9 9 9 What I want is, the value of i should be bounded to the anonymous function. And the output should like this: for f in a: print f() 0 1 4 9 How to achieve this? Thanks a lot! Jeremy Sanders a �crit : > fdu.xiaojf@gmail.com wrote: > > >>What I want is, the value of i should be bounded to the anonymous >>function. And th...

please forgive and be kind to this call for help. I'm trying to script a web survey and I'm not having any luck. Specifically, the survey is composed of eight questions (two will be given in the sample below) and the possible responses are: a) approve the measure b) no opinion c) object to the measure. I am trying to create a function script whereby if the user chooses (c) object, he had to elaborate on that by choosing one of four possible flavors: a) the project is not sound b) the project duplicates a previous project c) the project is not needed d) other - which gives the user ...

Hello: I have a Matlab code that takes long in the first time of running, but less time in later executions. I don't know why that happened. The code contains GUI and mathematical calculations, so I would like to trace which part of the code cost most of the time and then check why it costs more in the first time run. However, I only know use tic and toc to do that, and it will be tedious to add them in all part of the code. Is there a tool or function for Matlab that can automatically trace which part of the Matlab code is the most time consuming? Any help will be appreciated. "...

I am trying to run the function t= M/(R/n), where R is a random number generated between 15 and 25. What function do i use to run this simulation 10,000 times and calculate the mean and std error from 306. This is what i have so far M=74 n=88 No=306 R= RandomReal[{15,23}] t= M/(R/n) t = x; Do[t = M/(R/n), {10000}] Everything is working for me except how to run the simulation 10,000 times M = 74; n = 88; No = 306; R = RandomReal[{15, 23}, {10000}]; t = M/(R/n); mu = Mean[t] 348.482 No - mu -42.4819 StandardDeviation[t] 43.0218 Bob Hanlon ---- Kev...

On 5/7/10 at 6:28 AM, kxcarmichael250@hotmail.com (Kevin) wrote: >I am trying to run the function t= M/(R/n), where R is a random >number generated between 15 and 25. What function do i use to run >this simulation 10,000 times and calculate the mean and std error >from 306. >M=74 >n=88 >No=306 >R= RandomReal[{15,23}] You do not want to use Set here. with this code, RandomReal[{15,23}] will evaluate and the result will be assigne to R. All future references to R will use this value, not a new random value. To get a new random value every time R is used ...

Hello, just some questions concerning the EAPR flow for Xilinx.. The examples related to the EAPR allow to access the bitstreams stored in a compact flash (SystemACE) .. Has any body any experience in moving the bitstreams to a DDR RAM initially and let the ICAP access the bitstreams from there .. ? What are the advantages and disadvantages .. Also i would like to know if there are any C functions that i can add to the processor code to print out the reconfiguration time between the switching of the bitstreams ? Thanks Quadri ...

I would use a FOR loop and collect the generated points in a preallocated vector like, M=74; n=88; T = Range[10000]; For[i=1, i<=10000, i++, R= RandomReal[{15,23}]; T[[i]]= M/(R/n); ]; myMean = Mean[T]; However, this is very much a procedural programming approach. I'm sure the Mathematica experts helping on this list can provide a more efficient approach... Joe On Fri, May 7, 2010 at 6:28 AM, Kevin <kxcarmichael250@hotmail.com> wrote: > I am trying to run the function t= M/(R/n), where R is a random number > generated between 15 and 25. Wh...

On 5/8/10 at 7:08 AM, hays.joe@gmail.com (Joe Hays) wrote: >I would use a FOR loop and collect the generated points in a >preallocated vector like, >M=74; >n=88; >T = Range[10000]; >For[i=1, i<=10000, i++, >R= RandomReal[{15,23}]; >T[[i]]= M/(R/n); >]; >myMean = Mean[T]; >However, this is very much a procedural programming approach. I'm >sure the Mathematica experts helping on this list can provide a more >efficient approach... One thing about efficiency. Doing: myMean = Mean[M/(RandomReal[{15,23}, 10000]/n)] is far m...

I tend to deal with dates a lot in different formats and places... typically I'll convert them to a time tuple with strptime(), and pass them around like that before I need to write them back out. One set of time/dates I'm getting are in UTC, but the string doesn't say that specifically. So I do this.. I had expected the outcome to be offset properly (I'm EST5EDT). But I'm obviously missing something: #!/usr/bin/env python import time utc_str = '2008-05-10 03:05:00 UTC' d = time.strptime(utc_str,'%Y-%m-%d %H:%M:%S %Z') t = time.mktime(d) print d pri...

Hi, I see anonymous function h = ezcontour(@(x,y) pdf(obj,[x y]),[-8 6],[-8 6]); in a Matlab example. I am confused by what is 'x' and 'y'. pdf has definition: Y = pdf(name,X,A) computes the probability density function for the one- parameter family of distributions specified by name. Parameter values for the distribution are given in A. Densities are evaluated at the values in X and returned in Y. So, what is 'X' in the anonymous function? What is 'A"? Thanks, "fl" <rxjwg98@gmail.com> wrote in messag...

I am doing real-time image processing with VHDL. But I am not quite sure how I simulate the system with an input image. Basically, an image processing system takes input data from an image source, then does some work, finally output the result. Once I have the vhdl project compiled, for the waveform timing simulation, how could I input data of a 512x512 image as a real-time environment. I don't think I should save the whole image data matrix in some embedded memory blocks. Someone told me that I can try test bench. But I have no idea about that. Can someone give a quick guide or sug...

Hello I have a win32 c++ application that shows a map of the world & the local time at a selected city. But for some reason the local time is all random numbers when it was showing the correct time before with my function. I changed some things so you could select 12hr or 24hr time format but I cant see why my local time is not working now. Can you help me see why the time function broke. [b]This is my application before I made the changes & the time works(is correct):[/b] http://www.mediafire.com/?nlmmzdzz3y4 - 120kb [b]And here is the latest version of the app wher...

Hello I have a win32 c++ application that shows a map of the world & the local time at a selected city. But for some reason the local time is all random numbers when it was showing the correct time before with my function. I changed some things so you could select 12hr or 24hr time format but I cant see why my local time is not working now. Can you help me see why the time function broke. [b]This is my application before I made the changes & the time works(is correct):[/b] http://www.mediafire.com/?nlmmzdzz3y4 - 120kb [b]And here is the latest version of the app wher...