(Persamaan, Operator, Fungsi Gelombang, Tensor) Transpose

Persamaan, Operator, Fungsi Gelombang dan Tensor

Problem with Checkbox

unit Unit1;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ExtCtrls;

type
TForm1 = class(TForm)
Button1: TButton;
Image1: TImage;
CheckBox1: TCheckBox;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

var
Form1: TForm1;
m,n:integer;

implementation

{$R *.dfm}
procedure lingkaran;
begin
form1.Image1.Canvas.Brush.Color:=clwhite;
form1.Image1.Canvas.Ellipse(m-77,n-77,m+77,n+77);
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
m:=75;
n:=57;
//buat kotak putih//
form1.Image1.Canvas.Brush.Color:=clwhite;
form1.Image1.Canvas.Rectangle(0,0,form1.Image1.Width,form1.Image1.Height);
//buat pohon//
//buat lingkaran//
if form1.CheckBox1.Checked=true then begin
lingkaran;
end;
form1.Image1.Canvas.Brush.Color:=clblue;
form1.Image1.Canvas.Ellipse(m-7,n-7,m+7,n+7);
end;


end.

The Answer of My Introduction Mathemathical for Physicist (Jawaban ujian Fismatku)

I use fortran to generate x n y position:

below is the code

PROGRAM Grafik
IMPLICIT NONE
REAL :: gaya,ygaya,k,ky,a,ay,m,v,vy,t,x,y,z
REAL :: sbx,sby,sbz,g,fx,fy,fz
REAL :: r,dt,dx,dy,dz,dv,dvy,theta,phi
INTEGER :: i,j,n
r =100
g =10
n =50
k =10000
ky =1000
t=0
dt=0.001
OPEN (80, FILE = 'data.dat', STATUS = 'NEW', FORM = 'FORMATTED')
WRITE(80,*) ' i t x y'
CLOSE(80)
OPEN(80, ACCESS = 'APPEND', FILE = 'data.dat', FORM = 'FORMATTED')
DO i=-n,n
x=i
x=x/10
IF (x .NE. 1) THEN
!y=(2+x-x*x)/(x-1)/(x-1)
z=2-x-x*x
vy=(x-1)*(x-1)
y=z/vy
END IF
WRITE(80,81) x,y
8¹FORMAT(e14.7,' ',e14.7)
END DO
CLOSE(80)
END PROGRAM Grafik

compile using:

$gfortran grafik.f90

that syntax has output a.out
run using:

$./a.out

It'll create file named data.dat and generate number of f(x)=(2-x-x^2)/(x-1)^2

plot using kst :
$kst -x ¹-y 2 data.dat

It means kst will plot a graph using 1st column as x-axis and 2nd column as y-axis of data.dat

to simplify that procedure, I create text file named run.sh contain:

rm *.dat
gfortran grafik.f90
./a.out
kst -x ¹-y 2 data.dat

make run.sh executable
then run:
$./run.sh



.........dan mereka hidup bahagia berdua selamanya.

First on Fortran

My first program written in fortran is below


!================================================
PROGRAM Grafik

IMPLICIT NONE
!declare variable
REAL :: gaya,ygaya,k,ky,a,ay,m,v,vy,t,x,y,z
REAL :: sbx,sby,sbz,g,fx,fy,fz
REAL :: r,dt,dx,dy,dz,dv,dvy,theta,phi
INTEGER :: i,j,n
!initial value
r =100
g =10
n =10000
k =10000
ky =1000
t=0
dt=0.001
!dx=0.01
m=10
v=0
x=10
y=10
vy=0
!create new file named data.dat (you may change the extension. I used that as I think .dat is cool extension )
OPEN (80, FILE = 'data.dat', STATUS = 'NEW', FORM = 'FORMATTED')
WRITE(80,*) ' i t x y'
CLOSE(80)


OPEN(80, ACCESS = 'APPEND', FILE = 'data.dat', FORM = 'FORMATTED')
!the algorithm
DO i=1,n
gaya=-k*x
a=gaya/m
dv=a*dt
v=v+dv
dx=v*dt
x=x+dx

ygaya=-ky*y
ay=ygaya/m
dvy=ay*dt
vy=vy+dvy
dy=vy*dt
y=y+dy
t=t+dt

!write the result of calclation to data.dat
WRITE(80,81) i, t, x, y
81 FORMAT(i7,' 'e14.7,' ',e14.7,' ',e14.7)
END DO

CLOSE(80)


END PROGRAM Grafik
!===========================================

save to grafik.f90 then compile using this syntax
$gfortran grafik.f90

that'll produce file named a.out

run using
$./a.out

and data.dat will appear
to plot the graphic using value in data.dat I use kst

$kst -x 2 -y 3 data dat

mean kst will use 2nd column as x-axis n 3rd as y-axis


Yeah, I know that the steps look boring, so I used sh script below to generate it automatically.
using kwrite, create text file like below:
rm *.dat
gfortran grafik.f90
./a.out
kst -x 2 -y 3 data.dat

save as run.sh, make it executable then run:
$./run.sh




!I also used script below to generate x, y, z in text file and plot it using kst
!
!DO i=1 ,100
! dt=i
! dt=dt/100
! sbx=r*sin(dt)
! sby=r*cos(dt)
! sbz=dt
! WRITE(80,81) sbx, sby, sbz
! 81 FORMAT(F10.2,' ',e14.7,' ',e14.7)
!END DO

!DO i=1, n
!DO j=1, n
! theta=i
! phi=j
! sbx=r*sin(theta)*cos(phi)
! sby=r*sin(theta)*sin(phi)
! sbz=r*cos(theta)
! !sbz=2
! WRITE(80,81) i, j, sbx, sby, sbz
! 81 FORMAT(i7,' ',i7,' 'e14.7,' ',e14.7,' ',e14.7)
! PRINT*, 'theta: ',i,' -------------'
! PRINT*, 'phi: ',j,' -------------'
! PRINT*, 'sb-x :', sbx
! PRINT*, 'sb-y :', sby
! PRINT*, 'sb-z :', sbz
!END DO
!END DO



There is something strange in two script above. The result is x, y, z (THREE variable) but why the plot is just in TWO axis? Err..., that the weakness of kst.

At prior time :), I used gnuplot to generate "3D" picture--of course, it just projection of z-axis (or x-axis if you using left-handed coordinate)--but I have'nt yet found to automating it using .sh script.

If you like to using gnuplot:
$gnuplot
>plot "data.dat" using 2:3 (oops, that still 2D. Plotting data.dat using 2nd and 3rd column)



>splot "data.dat" using 2:3:4 (that is.)


I've skimmed "man gnuplot" but did'nt found how to do it automatically

anybody can help me automating it using gnuplot?


oh yeah, almost forget, I use Linux.

in the middle of the night

Well, it's time to start anything seriously. And prove that I'm physicist

Mekanika klasik, duh...

Dapatkan persamaan gerak benda jatuh dengan gaya hambat udara 0.5kvv. Integralkan hasilnya untuk mendapatkan kecepatan sebagai fungsi waktu dan tunjukkan bahwa kecepatan maksimum jatuhnya adalah mg/k.


Haha jadi teringat masa lalu.

simulasi perkotaan

Membuat simulasi pertumbuhan daerah kota meggunakan CA:

langkah:

1. Buat sel 200x200
   
2. dari sel-sel tersebut, tentukan mana sel yang merupakan sungai, jalan, kota, danau, polusi atau daerah kosong, menggunakan record.
3. proses menggunakan syarat-syarat yang telah ditentukan
4. lihat hasilnya.

syarat:

• jika dia 'sungai', biarkan saja
  
• begitu juga jika dia 'jalan'
• jika memiliki 3 atau lebih tetangga yang berupa 'kota' DAN tidak punya tetangga yang berupa 'polusi', ubah dia mejadi kota
• jika punya tetangga berupa 'polusi', biarkan saja
• jika tetangganya 'jalan DAN satu atau lebih 'kota' DAN tidak punya tetangga 'polusi', ubah dia menjadi 'kota'.
• jika satu atu lebih tetangganya 'danau' DAN satu atau lebih 'kota' DAN tidak ada tetangga berupa polusi, ubah dia menjadi kota
• jika dia 'kota' biarkan saja.

Bagaimana kita tahu bahwa sebuah sel itu kota, sungai atau jalan?

buat variabel 'status' berupa integer.
jika status=1 maka dia adalah 'sel kosong'
jika status=2 maka dia adalah 'kota'
jika status=3 maka dia adalah 'jalan'

Hiks, kenapa ketemu 'ini' lagi?

Classical Mechanics