How to Invert the X or Y Axis

How to invert the x or y axis

There is a new API that makes this even simpler.

plt.gca().invert_xaxis()

and/or

plt.gca().invert_yaxis()

Inverting the rotation along the X and the Y axis while keeping Z intact

I realized that I had this line inverted.

let multiplication = matrix * inverse

the correct is

let multiplication = inverse * matrix

Seaborn BarPlot invert y axis and keep x axis on bottom of chart area

seaborn.barplot is a wrapper for pyplot.bar and you may use pyplot.bar to create the plot with an inverted yaxis and bars that range from the bottom of the chart to a lower value up the y axis:

import matplotlib.pyplot as plt
import pandas as pd
import numpy as np

df = pd.DataFrame({"x":range(5), "y": [1,1.2,1.4,1.6,1.8]})

plt.bar(df.x, 2*np.ones(len(df))-df.y, bottom= df.y )
plt.gca().invert_yaxis()
plt.ylim(2,0)
plt.show()

invert x and y axis Google charts

use the following option to rotate the axis'...

orientation: 'vertical'

see following working snippet...

  google.charts.load('current', {'packages':['line']});
  google.charts.setOnLoadCallback(drawChart);

function drawChart() {

  var data = new google.visualization.DataTable();
  data.addColumn('number', 'Day');
  data.addColumn('number', 'Guardians of the Galaxy');
  data.addColumn('number', 'The Avengers');
  data.addColumn('number', 'Transformers: Age of Extinction');

  data.addRows([
    [1,  37.8, 80.8, 41.8],
    [2,  30.9, 69.5, 32.4],
    [3,  25.4,   57, 25.7],
    [4,  11.7, 18.8, 10.5],
    [5,  11.9, 17.6, 10.4],
    [6,   8.8, 13.6,  7.7],
    [7,   7.6, 12.3,  9.6],
    [8,  12.3, 29.2, 10.6],
    [9,  16.9, 42.9, 14.8],
    [10, 12.8, 30.9, 11.6],
    [11,  5.3,  7.9,  4.7],
    [12,  6.6,  8.4,  5.2],
    [13,  4.8,  6.3,  3.6],
    [14,  4.2,  6.2,  3.4]
  ]);

  var options = {
    chart: {
      title: 'Box Office Earnings in First Two Weeks of Opening',
      subtitle: 'in millions of dollars (USD)'
    },
    orientation: 'vertical',
    width: 900,
    height: 500
  };

  var chart = new google.charts.Line(document.getElementById('linechart_material'));

  chart.draw(data, google.charts.Line.convertOptions(options));
}

<script src="https://www.gstatic.com/charts/loader.js"></script>
<div id="linechart_material"></div>

How to reverse both x and y axis in Octave?

Use the following code in "figure" section:

set (gca (), "xdir", "reverse")
set (gca (), "ydir", "reverse")

Source

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