Curve Basics

Some examples require external input files. Before you start, please follow the link in the Example Scripts section to download the zip file with model and result files.

Example 01 - Curves from Expression

Create two curves from math expressions

import hw
import hw.hg as hg
import os

ses = hw.Session()
ses.new()
win = ses.get(hw.Window)
win.type = "xy"

exprXlist = ["0:1:0.0001", "c1.x"]
exprYlist = ["sin(x*2*PI)", "c1.y+0.2*sin(60*x*2*PI)"]
labelList = ["Basic Oscillation 1 HZ", "Overtone 60 HZ"]

for exprX, exprY, label in zip(exprXlist, exprYlist, labelList):
    cu = hg.CurveXY(
        xSource="math",
        xExpression=exprX,
        ySource="math",
        yExpression=exprY,
        label=label,
    )

win.update()

Figure 1. Output of ‘Create two curves from math expressions’

Example 02 - Curves from File

Load two curves from file, define color and label

import hw
import hw.hg as hg
import os

ALTAIR_HOME = os.path.abspath(os.environ["ALTAIR_HOME"])
plotFile = os.path.join(
    ALTAIR_HOME, "demos", "mv_hv_hg", "plotting", "madymo", "ANGACC"
)

ses = hw.Session()
ses.new()
win = ses.get(hw.Window)
win.type = "xy"

requestList = ["50th% Hybrid3   - LOWER TORSO", "50th% Hybrid3   - UPPER TORSO"]
colorList = [(255, 0, 0), (0, 0, 255)]

for color, request in zip(colorList, requestList):
    cu = hg.CurveXY(
        xFile=plotFile,
        xSource="file",
        xDataType="Time",
        xRequest="Time",
        xComponent="Time",
        yFile=plotFile,
        ySource="file",
        yDataType="Angular Acceleration",
        yRequest=request,
        yComponent="Res. ang. acc.",
        lineColor=color,
        label="{y.HWRequest} - {y.HWComponent}",
    )

win.update()

Figure 2. Output of ‘Load two curves from file, define color and label’

Example 03 - Complex Curve

Create and edit complex curves

import hw
import hw.hg as hg
import os

scriptDir = os.path.abspath(os.path.dirname(__file__))
plotFile = os.path.join(scriptDir, "plot", "control_arm_sol111.pch")

s = hw.Session()
s.new()
# evalHWC('hwd window type="HyperGraph 2D"')
w = s.get(hw.Window)
w.type = "complex"
w.axisMode = "ri"

yrCompList = ["REL | X-Trans", "REL | Y-Trans", "REL | Z-Trans"]
yiCompList = ["IMG | X-Trans", "IMG | Y-Trans", "IMG | Z-Trans"]
colorList = ["#ff0000", "#00ff00", "#0000ff"]

for yrComp, yiComp, color in zip(yrCompList, yiCompList, colorList):
    cu = hg.CurveComplex(
        xFile=plotFile,
        label="{y.HWRequest} - {y.HWComponent}",
        xSource="file",
        xDataType="Frequency [Hz]",
        xRequest="Frequency [Hz",
        xComponent="Frequency [Hz",
        yrFile=plotFile,
        yrSource="file",
        yrDataType="Displacements",
        yrRequest="Point id 2086",
        yrComponent=yrComp,
        yiFile=plotFile,
        yiSource="file",
        yiDataType="Displacements",
        yiRequest="Point id 2086",
        yiComponent=yiComp,
        lineColor=color,
        window=1,
        page=1,
    )

cu.shadeArea = True
cu.shadeStyle = "betweenCurves"
cu.shadeSecondCurve = 2
cu.shadeColor = (0, 0, 0)
cu.shadeAlpha = 0.2

Figure 3. Creating complex curve from file

Example 04 - Bar Charts

Creating bar charts with CurveBar() constructor

import hw
import hw.hg as hg
import os

ALTAIR_HOME = os.path.abspath(os.environ['ALTAIR_HOME'])
plotFile    = os.path.join(ALTAIR_HOME,'demos','mv_hv_hg','plotting','madymo','ANGACC')

ses = hw.Session()
ses.new()
win = ses.get(hw.Window)

win.type = 'bar'

win.barCategoryValues = ([*range(1,20)])
win.barSetCategoryValue(1,['A','B','C','D','E','F','G'])

win.barGap = 10
win.barStyle = 'stack'
win.barCategoryLabelAngle = 'diagonal'
win.barLabelVisibility = True
win.barLabelFormat = 'fixed'
win.barLabelPrecision = 0

# Layout and channel settings
colorList   = [(255,0,0),(0,0,255)]
requestList = ['50th% Hybrid3   - LOWER TORSO','50th% Hybrid3   - UPPER TORSO']
prefixList  = ['A','B']

# Loop over curves, notes and datums
for color,request,pf in zip(colorList,requestList,prefixList):

    bar = hg.CurveBar(yFile=plotFile,
            ySource='file',
            yDataType='Angular Acceleration',
            yRequest=request,
            yComponent='Res. ang. acc.',
            lineColor=color,
            label=request,
            showPrefix=True,
            prefix=pf,
            yOffset=20)

Figure 4. Creating bar charts from file