Recent content by ydonna1990

O.K. Thanks. What about this nCtrl here. I googled and found that it means node control. What does that mean? DO jj=1,nCtrl WRITE(30,*)g_best(jj) ENDDO do j=1,p_num WRITE(520,*)ii,gf_best enddo ENDDO

You are absolutely right. It doesn't run actually. I was given an assignment to fix this and make it run. I am really new to this so I am pretty much clueless. Do you think you can help me in private?

Thank you for your detailed reply. So that leads me to ask some more questions. DO READ(11,'(a)',iostat=IERR)line so I guess this means read the line 11 and test the IERR value there. What is this "(a)" for? IF ((line(1:2)/='--').and.(line/=' '))THEN...

DO READ(11,'(a)',iostat=IERR)line IF ((line(1:2)/='--').and.(line/=' '))THEN READ(line,*,iostat=IERR) posinumber EXIT ENDIF ENDDO What is IERR? Is it related to error? I couldn't find any good answer researching online. Thanks in advance

Ah ok. Thanks anyway

SUBROUTINE ConProdOpt(Iphi_in,Ilnkx_in,Ilnky_in,Ilnkz_in,FirstRun_in,Neindx_in) IMPLICIT NONE INTEGER,buf ::Iphi_in,Ilnkx_in,Ilnky_in,Ilnkz_in,FirstRun_in I saw it everywhere earlier but for some reason I can't find it and now I can only find this one.

Thanks for the reply. if (userdefine==0) then open(100,file='COORD.DAT',iostat=stat) if(stat==0)then read(100,'(a)',iostat=stat)line read(100,'(a)',iostat=stat)line if ((line(1:2)/='--').and.(line/=' ').and.(line(1:5)/='COORD'))then

Hello. I am a beginner in the Fortran language and I want to know what isotat=stat means. also what is exactly the "buf argument"?

Alright. Do you think it'd be ok if I pm you some time later? (currently I am working on something). You are kind. I really appreciate your help.

CAS is part of geogebra. I just downloaded it and I am looking at it now. O.K. I will do that.

It's great. Thank you. I am trying it out now. I am trying to use CAS but it doesn't seem to plot. Any ideas?

Well, one name, two names, three names. Happy to be given a list eventually. I will def check out Gnuplot and Maple.

The equation is 2(x^2+y^2)^2=25(x^2-y^2). I wrote my post in a hurry and didn't see the error until now. Also as for the usage of the word "must", it could have easily been replaced with words like "could, should, may", etc. It's just a technicality. I apologize if you misunderstood. Thanks...

The example that I posted is Lemniscate's equation in Cartesian coordinates. Please refer to https://en.wikipedia.org/wiki/Lemniscate_of_Bernoulli Anyway, I have the equations and I would like to draw the curves. And as you said, I know that there are many software programs available. Can you...

Hi everyone, Thanks for visiting my post. I was wondering if you guys know what kind of software I must use to draw complicated curves. I already have the equations. For example, for lemniscate I would use following: 2(x^2+y^2)=25(x^2-y^2) I appreciate the help.