Mathc initiation/Fichiers h : c49bb

En pratique modifier

Vous pouvez tester ces exemples en les copiant directement dans gnuplot. Il suffit ensuite de taper return pour effectuer les commandes.

test modifier

Cet exemple donne les informations de base.

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# Copy and past this file into the screen of gnuplot
#
#
test
reset
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Le passage à la ligne modifier

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# Copy and past this file into the screen of gnuplot
#
#
#  \n ->   \
#
plot cos(x),\
     sin(x),\
         .4,\
        -.4
reset
# ---------------------

Chaine de caractères modifier

linetype | lt <0..15> modifier

Chaque nombre correspond à une couleur différente. (voir test)

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# Copy and past this file into the screen of gnuplot
#
#
#  linetype  | lt <0..15> 
#
plot cos(x) lt 1,\
     sin(x) lt 2,\
        .4  lt 3,\
       -.4  lt 3
reset
# ---------------------

linewidth | lw <1.. 6> modifier

Chaque nombre correspond à une épaisseur différente.

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# Copy and past this file into the screen of gnuplot
#
#
#  #  linewidth | lw <1.. 6>
#
plot cos(x) lt 1 lw 1,\
     sin(x) lt 2 lw 3,\
        .4  lt 3 lw 4,\
       -.4  lt 3 lw 6
reset
# ---------------------

Liste de points modifier

plot "data" modifier

Dessiner une liste de points.

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# Copy and past this file into the screen of gnuplot
#
#
#  
plot "data" 
reset
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Créer un fichier "data" avec ces données :

pointtype | pt <0..15> modifier

Chaque nombre correspond à un dessin différent de points. (voir test)

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# Copy and past this file into the screen of gnuplot
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#
#  pointtype | pt <0..15>
#
plot "data" pt 10
reset
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pointsize | ps <1.. > modifier

Chaque nombre correspond à une taille de points différents. (voir test)

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# Copy and past this file into the screen of gnuplot
#
#
#  pointsize | ps <1..  >
#
plot "data" pt 10  ps 3
reset
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with linesp modifier

Les points sont réliés par des segments.

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# Copy and past this file into the screen of gnuplot
#
#
#  linetype  | lt <0..15>   (color)
#  linewidth | lw <1.. 6>   (size)
#  pointsize | ps <1..  >   (size)
#
plot "data" with linesp lt 3 lw 3 ps 3
reset
# ---------------------

pt 0 modifier

Sans les points.

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# Copy and past this file into the screen of gnuplot
#
#
#  linetype  | lt <0..15>   (color)
#  linewidth | lw <1.. 6>   (size)
#  pointsize | ps <1..  >   (size)
#
plot "data" with linesp lt 3 lw 3 ps 3 pt 0
reset
# ---------------------

Commandes générales modifier

set zeroaxis lt 8 lw 3 modifier

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#
#
#  linetype  | lt <0..15>   (color)
#  linewidth | lw <1.. 6>   (size)
#
set zeroaxis lt 8 lw 3
plot sin(x),\
     cos(x)
reset
# ---------------------

set grid lt 8 lw 3 modifier

# ---------------------
# Copy and past this file into the screen of gnuplot
#
#
#  linetype  | lt <0..15>   (color)
#  linewidth | lw <1.. 6>   (size)
#  pointsize | ps <1..  >   (size)
#
set grid lt 8 lw 3
plot sin(x),\
     cos(x)
reset
# ---------------------

Pour éviter la déformation du graphe :

set size ratio -1

# ---------------------
# Copy and past this file into the screen of gnuplot
#
#  linetype  | lt <0..8>   (color)
#  linewidth | lw <1..6>   (size)
#
set size ratio -1
plot [-5.:5] [-1:1]\
     cos(x) lt 8 lw  6,\
     sin(x) lt 7 lw  6
reset
# ---------------------

complet modifier

# ---------------------
# Copy and past this file into the screen of gnuplot
#
#
#  linetype  | lt <0..15>   (color)
#  linewidth | lw <1.. 6>   (size)
#  pointsize | ps <1..  >   (size)
#
set zeroaxis lt 8 lw 3
set grid 
plot [-6.:6.] [-1.4:1.4]\
     sin(x),\
     cos(x)
reset
# ---------------------

En pratique modifier

Les premières commandes pour dessiner des fonctions en 3d.

splot[x][y][z] (La fonction) modifier

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# Copy and past this file into the screen of gnuplot
#
#
reset
splot [0:2*pi][0:2*pi][-1:1]\
cos(x)*cos(y)
# ---------------------

set hidden (Faces cachées) modifier

# ---------------------
# Copy and past this file into the screen of gnuplot
#
#
reset
set hidden
splot [0:2*pi][0:2*pi][-1:1]\
cos(x)*cos(y)
# ---------------------

set view rot_x, rot_z, scale, scale_z (Imposer une vue) modifier

# ---------------------
# Copy and past this file into the screen of gnuplot
#
#
reset
set hidden
set view 55.,57.,  1., 1. 
splot [0:2*pi][0:2*pi][-1:1]\
cos(x)*cos(y)
# ---------------------

set xlabel "X axis" (Nommer les axes) modifier

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# Copy and past this file into the screen of gnuplot
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#
reset
set hidden
set xlabel "X axis"
set ylabel "Y axis"
set view 55.,57.,  1., 1. 
splot [0:2*pi][0:2*pi][-1:1]\
cos(x)*cos(y)
# ---------------------