ChartDirector 6.0 (Python Edition)

3D Scatter Axis Types




This example demonstrates different axis scale types for the 3D scatter charts. It also demonstrates using different symbol shapes.

Like an XYChart, in a ThreeDScatterChart, the axis scale can represent numbers, date/time or labels. In this example, the x-axis uses a date/time scale, the y-axis uses a label based scale, and the z-axis uses a numeric scale.

Source Code Listing

[Standalone Version] pythondemo\threedscatteraxis.py
#!/usr/bin/python
from pychartdir import *


# The x coordinates for the 2 scatter groups
dataX = [chartTime(2011, 9, 1), chartTime(2011, 9, 2), chartTime(2011, 9, 3), chartTime(2011, 9, 4),
    chartTime(2011, 9, 5), chartTime(2011, 9, 6), chartTime(2011, 9, 7), chartTime(2011, 9, 8),
    chartTime(2011, 9, 9), chartTime(2011, 9, 10), chartTime(2011, 9, 11)]

# The y and z coordinates for the first scatter group
dataY0 = [0.4, 0.2, 0.5, 0.4, 0.7, 1.3, 1.1, 1.0, 0.6, 0.4, 0.5]
dataZ0 = [43, 38, 33, 23.4, 28, 36, 34, 47, 53, 45, 40]

# The y and z coordinates for the second scatter group
dataY1 = [1.4, 1.0, 1.8, 1.9, 1.5, 1.0, 0.6, 0.7, 1.2, 1.7, 1.5]
dataZ1 = [46, 41, 33, 37, 28, 29, 34, 37, 41, 52, 50]

# Instead of displaying numeric values, labels are used for the y-axis
labelsY = ["Low", "Medium", "High"]

# Create a ThreeDScatterChart object of size 760 x 520 pixels
c = ThreeDScatterChart(760, 520)

# Add a title to the chart using 18 points Arial font
c.addTitle("3D Scatter Chart Axis Types", "arial.ttf", 18)

# Set the center of the plot region at (385, 270), and set width x depth x height to 480 x 240 x 240
# pixels
c.setPlotRegion(385, 270, 480, 240, 240)

# Set the elevation and rotation angles to 30 and -10 degrees
c.setViewAngle(30, -10)

# Add a legend box at (380, 40) with horizontal layout. Use 9pt Arial Bold font.
b = c.addLegend(380, 40, 0, "arialbd.ttf", 9)
b.setAlignment(TopCenter)
b.setRoundedCorners()

# Add a scatter group to the chart using 13 pixels red (ff0000) glass sphere symbols, with dotted
# drop lines
g0 = c.addScatterGroup(dataX, dataY0, dataZ0, "Alpha Series", GlassSphere2Shape, 13, 0xff0000)
g0.setDropLine(c.dashLineColor(SameAsMainColor, DotLine))

# Add a scatter group to the chart using 13 pixels blue (00cc00) cross symbols, with dotted drop
# lines
g1 = c.addScatterGroup(dataX, dataY1, dataZ1, "Beta Series", Cross2Shape(), 13, 0x00cc00)
g1.setDropLine(c.dashLineColor(SameAsMainColor, DotLine))

# Set x-axis tick density to 50 pixels. ChartDirector auto-scaling will use this as the guideline
# when putting ticks on the x-axis.
c.xAxis().setTickDensity(50)

# Set the y-axis labels
c.yAxis().setLabels(labelsY)

# Set label style to Arial bold for all axes
c.xAxis().setLabelStyle("arialbd.ttf")
c.yAxis().setLabelStyle("arialbd.ttf")
c.zAxis().setLabelStyle("arialbd.ttf")

# Set the x, y and z axis titles using deep blue (000088) 15 points Arial font
c.xAxis().setTitle("Date/Time Axis", "ariali.ttf", 15, 0x000088)
c.yAxis().setTitle("Label\nBased\nAxis", "ariali.ttf", 15, 0x000088)
c.zAxis().setTitle("Numeric Axis", "ariali.ttf", 15, 0x000088)

# Output the chart
c.makeChart("threedscatteraxis.png")

[CGI Version] pythondemo_cgi\threedscatteraxis.py
#!/usr/bin/python
from pychartdir import *


# The x coordinates for the 2 scatter groups
dataX = [chartTime(2011, 9, 1), chartTime(2011, 9, 2), chartTime(2011, 9, 3), chartTime(2011, 9, 4),
    chartTime(2011, 9, 5), chartTime(2011, 9, 6), chartTime(2011, 9, 7), chartTime(2011, 9, 8),
    chartTime(2011, 9, 9), chartTime(2011, 9, 10), chartTime(2011, 9, 11)]

# The y and z coordinates for the first scatter group
dataY0 = [0.4, 0.2, 0.5, 0.4, 0.7, 1.3, 1.1, 1.0, 0.6, 0.4, 0.5]
dataZ0 = [43, 38, 33, 23.4, 28, 36, 34, 47, 53, 45, 40]

# The y and z coordinates for the second scatter group
dataY1 = [1.4, 1.0, 1.8, 1.9, 1.5, 1.0, 0.6, 0.7, 1.2, 1.7, 1.5]
dataZ1 = [46, 41, 33, 37, 28, 29, 34, 37, 41, 52, 50]

# Instead of displaying numeric values, labels are used for the y-axis
labelsY = ["Low", "Medium", "High"]

# Create a ThreeDScatterChart object of size 760 x 520 pixels
c = ThreeDScatterChart(760, 520)

# Add a title to the chart using 18 points Arial font
c.addTitle("3D Scatter Chart Axis Types", "arial.ttf", 18)

# Set the center of the plot region at (385, 270), and set width x depth x height to 480 x 240 x 240
# pixels
c.setPlotRegion(385, 270, 480, 240, 240)

# Set the elevation and rotation angles to 30 and -10 degrees
c.setViewAngle(30, -10)

# Add a legend box at (380, 40) with horizontal layout. Use 9pt Arial Bold font.
b = c.addLegend(380, 40, 0, "arialbd.ttf", 9)
b.setAlignment(TopCenter)
b.setRoundedCorners()

# Add a scatter group to the chart using 13 pixels red (ff0000) glass sphere symbols, with dotted
# drop lines
g0 = c.addScatterGroup(dataX, dataY0, dataZ0, "Alpha Series", GlassSphere2Shape, 13, 0xff0000)
g0.setDropLine(c.dashLineColor(SameAsMainColor, DotLine))

# Add a scatter group to the chart using 13 pixels blue (00cc00) cross symbols, with dotted drop
# lines
g1 = c.addScatterGroup(dataX, dataY1, dataZ1, "Beta Series", Cross2Shape(), 13, 0x00cc00)
g1.setDropLine(c.dashLineColor(SameAsMainColor, DotLine))

# Set x-axis tick density to 50 pixels. ChartDirector auto-scaling will use this as the guideline
# when putting ticks on the x-axis.
c.xAxis().setTickDensity(50)

# Set the y-axis labels
c.yAxis().setLabels(labelsY)

# Set label style to Arial bold for all axes
c.xAxis().setLabelStyle("arialbd.ttf")
c.yAxis().setLabelStyle("arialbd.ttf")
c.zAxis().setLabelStyle("arialbd.ttf")

# Set the x, y and z axis titles using deep blue (000088) 15 points Arial font
c.xAxis().setTitle("Date/Time Axis", "ariali.ttf", 15, 0x000088)
c.yAxis().setTitle("Label\nBased\nAxis", "ariali.ttf", 15, 0x000088)
c.zAxis().setTitle("Numeric Axis", "ariali.ttf", 15, 0x000088)

# Output the chart
print("Content-type: image/png\n")
binaryPrint(c.makeChart2(PNG))