Comment définir la plage de l'axe Y dans Python Plotly ?

Plotly prend en charge les plages de réglage sur les axes X et Y. Voyons comment définir la plage de l'axe Y dans Plotly.

• plotly.graph_objects est utilisé pour générer des figures. Il contient de nombreuses méthodes pour personnaliser des graphiques et restituer un graphique au format HTML.

• Créez un module numpy et générez des plages aléatoires pour les axes X et Y.

• Créez la méthode Figure() pour dessiner l'axe X et l'axe Y en mode ligne

• Créez la méthode update_layout() et définissez la plage de l'axe Y.

Suivez les étapes indiquées pour définir la plage de l'axe Y dans Plotly.

Première étape : importer plotly

Importez le module plotly.graph_objs et alias-le vers go

<span class="kwd">import</span><span class="pln"> plotly</span><span class="pun">.</span><span class="pln">graphs_objs </span><span class="kwd">as</span><span class="pln"> go</span>

Étape 2 - Importer numpy

Importez le module numpy et définissez son alias sur np et définissez une valeur seed aléatoire.

<span class="kwd">import</span><span class="pln"> numpy </span><span class="kwd">as</span><span class="pln"> np
np</span><span class="pun">.</span><span class="pln">random</span><span class="pun">.</span><span class="pln">seed</span><span class="pun">(</span><span class="lit">3</span><span class="pun">)</span>

Étape 3 - Générer un nombre aléatoire sur l'axe X

Générons une liste de plages aléatoires de nombres sur l'axe X.

<span class="pln">x </span><span class="pun">=</span><span class="pln"> list</span><span class="pun">(</span><span class="pln">range</span><span class="pun">(</span><span class="lit">0</span><span class="pun">,</span><span class="lit">20</span><span class="pun">,</span><span class="lit">2</span><span class="pun">))</span>

Étape 4 - Générer des nombres aléatoires sur l'axe Y

Générez des nombres aléatoires sur l'axe Y comme suit -

<span class="pln">y </span><span class="pun">=</span><span class="pln"> np</span><span class="pun">.</span><span class="pln">random</span><span class="pun">.</span><span class="pln">randn</span><span class="pun">(</span><span class="lit">10</span><span class="pun">)</span>

Étape 5 - Générer le nuage de points

Générons le nuage de points avec les coordonnées suivantes −

<span class="pln">fig </span><span class="pun">=</span><span class="pln"> go</span><span class="pun">.</span><span class="typ">Figure</span><span class="pun">(</span><span class="pln">data</span><span class="pun">=</span><span class="pln">go</span><span class="pun">.</span><span class="typ">Scatter</span><span class="pun">(</span><span class="pln">x</span><span class="pun">=</span><span class="pln">x</span><span class="pun">,</span><span class="pln"> y</span><span class="pun">=</span><span class="pln">y</span><span class="pun">,</span><span class="pln"> mode</span><span class="pun">=</span><span class="str">'lines'</span><span class="pun">))</span>

Étape 6 - Définir la plage de l'axe Y

Utilisez la méthode update_layout() pour définir la plage de l'axe Y.

<span class="pln">fig</span><span class="pun">.</span><span class="pln">update_layout</span><span class="pun">(</span><span class="pln">yaxis_range</span><span class="pun">=[-</span><span class="lit">3</span><span class="pun">,</span><span class="lit">3</span><span class="pun">])</span>

Étape 7 - Afficher l'image

Utilisez la méthode show() pour afficher le graphique.

<span class="pln">fig</span><span class="pun">.</span><span class="pln">show</span><span class="pun">()</span>

La traduction chinoise de

Exemple

est :

Exemple

Le code complet pour définir la plage de l'axe Y dans Python Plotly est le suivant :

<span class="com"># Importing Libraries</span><span class="pln">
</span><span class="kwd">import</span><span class="pln"> plotly</span><span class="pun">.</span><span class="pln">graph_objs </span><span class="kwd">as</span><span class="pln"> go
</span><span class="kwd">import</span><span class="pln"> numpy </span><span class="kwd">as</span><span class="pln"> np

np</span><span class="pun">.</span><span class="pln">random</span><span class="pun">.</span><span class="pln">seed</span><span class="pun">(</span><span class="lit">3</span><span class="pun">)</span><span class="pln">

</span><span class="com"># generating numbers ranging from 0 to 18 on X-axis</span><span class="pln">
x </span><span class="pun">=</span><span class="pln"> list</span><span class="pun">(</span><span class="pln">range</span><span class="pun">(</span><span class="lit">0</span><span class="pun">,</span><span class="lit">20</span><span class="pun">,</span><span class="lit">2</span><span class="pun">))</span><span class="pln">

</span><span class="com"># generating random numbers on y-axis</span><span class="pln">
y </span><span class="pun">=</span><span class="pln"> np</span><span class="pun">.</span><span class="pln">random</span><span class="pun">.</span><span class="pln">randn</span><span class="pun">(</span><span class="lit">10</span><span class="pun">)</span><span class="pln">

</span><span class="com"># plotting scatter plot on x and y data with</span><span class="pln">
</span><span class="com"># 'lines' as mode</span><span class="pln">
fig </span><span class="pun">=</span><span class="pln"> go</span><span class="pun">.</span><span class="typ">Figure</span><span class="pun">(</span><span class="pln">data</span><span class="pun">=</span><span class="pln">go</span><span class="pun">.</span><span class="typ">Scatter</span><span class="pun">(</span><span class="pln">x</span><span class="pun">=</span><span class="pln">x</span><span class="pun">,</span><span class="pln"> y</span><span class="pun">=</span><span class="pln">y</span><span class="pun">,</span><span class="pln"> mode</span><span class="pun">=</span><span class="str">'lines'</span><span class="pun">))</span><span class="pln">

</span><span class="com"># setting the y-axis range from -3 to 3</span><span class="pln">
fig</span><span class="pun">.</span><span class="pln">update_layout</span><span class="pun">(</span><span class="pln">yaxis_range</span><span class="pun">=[-</span><span class="lit">3</span><span class="pun">,</span><span class="lit">3</span><span class="pun">])</span><span class="pln">

</span><span class="com"># to display the figure in the output screen</span><span class="pln">
fig</span><span class="pun">.</span><span class="pln">show</span><span class="pun">()</span>

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