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jpthompson212 merged 1 commit into from
Aug 25, 2020
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Python AzEl Polar Plot Example #65

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174 changes: 174 additions & 0 deletions StkAutomation/Python/AzEl Polar Plots/AzElPolarPlot_comtypes.ipynb
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{
"cells": [
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Imports\n",
"import matplotlib.pyplot as plt\n",
"import numpy as np\n",
"from comtypes.client import CreateObject"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Open STK, get the IAgSTKObjectRoot\n",
"uiApplication = CreateObject(\"STK12.Application\")\n",
"uiApplication.Visible=True\n",
"stkRoot = uiApplication.Personality2"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Import comptypes generated wrappers\n",
"from comtypes.gen import STKObjects\n",
"from comtypes.gen import STKUtil"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Create a new scenario\n",
"stkRoot.NewScenario(\"Python_AER_Polar_Plot\")\n",
"scenario = stkRoot.CurrentScenario\n",
"scenario2 = scenario.QueryInterface(STKObjects.IAgScenario)"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Add a satellite\n",
"satellite = scenario.Children.New(STKObjects.eSatellite, \"MySatellite\")\n",
"satellite2 = satellite.QueryInterface(STKObjects.IAgSatellite)\n",
"\n",
"#Set and get the propagator\n",
"satellite2.SetPropagatorType(STKObjects.ePropagatorTwoBody)\n",
"twoBodyProp = satellite2.Propagator.QueryInterface(STKObjects.IAgVePropagatorTwoBody)\n",
"\n",
"#Get initial state and change the inclination\n",
"initialState = twoBodyProp.InitialState.Representation.ConvertTo(STKUtil.eOrbitStateClassical).QueryInterface(STKObjects.IAgOrbitStateClassical)\n",
"initialState.Orientation.Inclination = 60\n",
"\n",
"#Assign initial state and propagate\n",
"twoBodyProp.InitialState.Representation.Assign(initialState)\n",
"twoBodyProp.Propagate()"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Add a default facility\n",
"facility = scenario.Children.New(STKObjects.eFacility, \"MyFacility\")"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Compute access\n",
"access = facility.GetAccessToObject(satellite)\n",
"access.ComputeAccess()"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Get all the access interval start and stop times\n",
"accessReport = access.DataProviders.Item(\"Access Data\").QueryInterface(STKObjects.IAgDataPrvInterval)\n",
"accessIntervals = accessReport.ExecElements(scenario2.StartTime, scenario2.Stoptime, [\"Access Number\",\"Start Time\", \"Stop Time\"])\n",
"accessIntervals = list(accessIntervals.DataSets.ToArray())"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Get Az El data for each access interval\n",
"aerData = []\n",
"for accessInterval in accessIntervals:\n",
" aerReport = access.DataProviders.GetDataPrvInfoFromPath(\"AER Data/Default\").QueryInterface(STKObjects.IAgDataPrvTimeVar).ExecElements(accessInterval[1], accessInterval[2], 20, [\"Azimuth\", \"Elevation\"])\n",
" aerData.append(list(aerReport.DataSets.ToArray()))"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Plot Az El for each interval on a polar plot with North up.\n",
"figure = plt.figure(figsize=(12,7.5))\n",
"axes = plt.axes(projection=\"polar\")\n",
"axes.set_theta_zero_location(\"N\")\n",
"axes.set_theta_direction(-1) #Theta increase clockwise\n",
"axes.set_rgrids(range(-90,1,15), labels=[\"\",\"75\"+u\"\\u00b0\",\"60\"+u\"\\u00b0\",\"45\"+u\"\\u00b0\",\"30\"+u\"\\u00b0\",\"15\"+u\"\\u00b0\"], angle=90) #Custom ticks\n",
"axes.set_rlim(-90,0) #set hard limits on r values\n",
"axes.set_title(\"Az El Polar Plot MyFacility-MySatellite\")\n",
"for aer, accessInterval in zip(aerData, accessIntervals):\n",
" aer = np.array(aer)\n",
" az = np.deg2rad(aer[:,0]) #convert azimuth from deg to rad\n",
" el = -aer[:,1] #plot the negative of elevation\n",
" \n",
" axes.plot(az[0],el[0], 'g^', markersize=15, clip_on=False) #mark rise location with green up\n",
" axes.plot(az[1:-1],el[1:-1], label=f\"{accessInterval[1][:-10]} - {accessInterval[2][:-10]}\", linewidth=4)\n",
" axes.plot(az[-1],el[-1], 'rv', markersize=15, clip_on=False) #mark set location with red down\n",
"\n",
"legend = figure.legend()"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.7.7"
}
},
"nbformat": 4,
"nbformat_minor": 4
}
161 changes: 161 additions & 0 deletions StkAutomation/Python/AzEl Polar Plots/AzElPolarPlot_win32com.ipynb
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{
"cells": [
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Imports\n",
"import matplotlib.pyplot as plt\n",
"import numpy as np\n",
"import win32com.client"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Open STK, get the IAgSTKObjectRoot\n",
"uiApplication = win32com.client.Dispatch(\"STK12.Application\")\n",
"uiApplication.Visible=True\n",
"stkRoot = uiApplication.Personality2"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Create a new scenario\n",
"stkRoot.NewScenario(\"Python_AER_Polar_Plot\")\n",
"scenario = stkRoot.CurrentScenario"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Add a satellite\n",
"satellite = scenario.Children.New(18, \"MySatellite\") #eSatellite\n",
"\n",
"#Set and get the propagator\n",
"satellite.SetPropagatorType(7) #ePropagatorTwoBody)\n",
"twoBodyProp = satellite.Propagator\n",
"\n",
"#Get initial state and change the inclination\n",
"initialState = twoBodyProp.InitialState.Representation.ConvertTo(1) #eOrbitStateClassical\n",
"initialState.Orientation.Inclination = 60\n",
"\n",
"#Assign initial state and propagate\n",
"twoBodyProp.InitialState.Representation.Assign(initialState)\n",
"twoBodyProp.Propagate()"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Add a default facility\n",
"facility = scenario.Children.New(8, \"MyFacility\") #eFacility"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Compute access\n",
"access = facility.GetAccessToObject(satellite)\n",
"access.ComputeAccess()"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Get all the access interval start and stop times\n",
"accessReport = access.DataProviders.Item(\"Access Data\")\n",
"accessIntervals = accessReport.ExecElements(scenario.StartTime, scenario.Stoptime, [\"Access Number\",\"Start Time\", \"Stop Time\"])\n",
"accessIntervals = list(accessIntervals.DataSets.ToArray())"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Get Az El data for each access interval\n",
"aerData = []\n",
"for accessInterval in accessIntervals:\n",
" aerReport = access.DataProviders.GetDataPrvInfoFromPath(\"AER Data/Default\").ExecElements(accessInterval[1], accessInterval[2], 20, [\"Azimuth\", \"Elevation\"])\n",
" aerData.append(list(aerReport.DataSets.ToArray()))"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": [
"#Plot Az El for each interval on a polar plot with North up.\n",
"figure = plt.figure(figsize=(12,7.5))\n",
"axes = plt.axes(projection=\"polar\")\n",
"axes.set_theta_zero_location(\"N\")\n",
"axes.set_theta_direction(-1) #Theta increase clockwise\n",
"axes.set_rgrids(range(-90,1,15), labels=[\"\",\"75\"+u\"\\u00b0\",\"60\"+u\"\\u00b0\",\"45\"+u\"\\u00b0\",\"30\"+u\"\\u00b0\",\"15\"+u\"\\u00b0\"], angle=90) #Custom ticks\n",
"axes.set_rlim(-90,0) #set hard limits on r values\n",
"axes.set_title(\"Az El Polar Plot MyFacility-MySatellite\")\n",
"for aer, accessInterval in zip(aerData, accessIntervals):\n",
" aer = np.array(aer)\n",
" az = np.deg2rad(aer[:,0]) #convert azimuth from deg to rad\n",
" el = -aer[:,1] #plot the negative of elevation\n",
" \n",
" axes.plot(az[0],el[0], 'g^', markersize=15, clip_on=False) #mark rise location with green up\n",
" axes.plot(az[1:-1],el[1:-1], label=f\"{accessInterval[1][:-10]} - {accessInterval[2][:-10]}\", linewidth=4)\n",
" axes.plot(az[-1],el[-1], 'rv', markersize=15, clip_on=False) #mark set location with red down\n",
"\n",
"legend = figure.legend()"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.7.7"
}
},
"nbformat": 4,
"nbformat_minor": 4
}
5 changes: 5 additions & 0 deletions StkAutomation/Python/AzEl Polar Plots/README.md
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# Az El Polar Plot

A basic example that demonstrates automating STK with python via either comtypes or win32com. The script creates a scenario, inserts a satellite and facility. Then access is calculated and azimuth and elevation data is extrated for each of the computed access intervals. This data is then plotted on a polar plot.

To run this example you will need: either comtypes or win32com, numpy, and matplotlib.