' Name: PiePlotAuto
'
' Title: Draw sector pie symbols of water quality data for each water management area
'
' Topics: Views
'
' Description: Called by WMAstep.
' Reads median chemical data from a file created outside
' ArcView, and plots Juanita Pie symbols at the monitoring points based on compliance
' with water quality guidelines
' Institute for Water Quality Studies, Department of Water and Sanitation
' Private Bag X313 PRETORIA South Africa 0001
' SilberbauerM@dwaf.gov.za
'
' Author: Michael Silberbauer 2001
'
' Requires: A View, a data file
'
' Self:
'
' Results:
' -----------------------------------------------------------------------------
theView = av.GetActiveDoc
thePrj = theView.GetProjection
' Get the GraphicList for the View...
' Return the extent (the enclosing rectangle) of the View:
theMapExtent = theView.GetDisplay.ReturnVisExtent
' Extract the dimensions of the View from the extent:
'+----------------------------+x2m,y2m
'| |
'| |
'| |
'| |ywm
'| |
'| |
'| |
'+----------------------------+
'x1m,y1m xwm
theLowerLeft = theMapExtent.ReturnOrigin
x1m = theLowerLeft.Getx
y1m = theLowerLeft.Gety
xwm = theMapExtent.GetWidth
ywm = theMapExtent.GetHeight
x2m = x1m+xwm
y2m = y1m+ywm
theUpperRight = x2m@y2m
_Scale = (x2m-x1m)/42
_nPetals = 0
_UseVariables = ""
av.Run("SetConstants",{})
_UseKeys = _UseVariables.ReturnKeys
for each key in _UseKeys
'MsgBox.Info( key.AsString, "key"++_nPetals.AsString )
_nPetals = _nPetals+1
end
theProject = av.getProject
if (_LblSymbol) then
theTable = theProject.FindDoc("keydata.txt")
theTable = theProject.FindDoc("keytestdata.txt")
'theTable = theProject.FindDoc( "mnmichaelj1h019q01.txt" )
else
'theTable = theProject.FindDoc( "olifants_data.txt" )
'theTable = theProject.FindDoc( "b1testph.txt" )
'theTable = theProject.FindDoc( "list2001-10-12-national-mauchax.txt" )
'theTable = theProject.FindDoc( "list2001-10-12-national-mauchay.txt" ) 'test data
theTable = _InorganicData
end
theVTab = theTable.getVTab
numrecs = theVTab.GetNumRecords
FieldList = theVTab.GetFields
'MsgBox.ListAsString( FieldList, "Field list", "All fields in"++theTable.AsString )
shortlist = List.Make
for each fieldname in FieldList
if (fieldname.asString.Left(3)="med") then
shortlist.Add(fieldname)
end
end
'MsgBox.ListAsString( shortlist, "Field list", "Median fields" )
'set file for debug data
aFileName = FN.make("Temp.txt")
if (File.CanDelete(aFileName)) then
File.Delete(aFileName)
end
linFile = LineFile.Make(aFileName,#FILE_PERM_WRITE)
av.ShowStopButton
av.ShowMsg("Starting process...")
for each record in theVTab
'for each record in 1 .. 10
theField = theVTab.FindField("WMA")
wma = theVtab.ReturnValue(theField,record)
if (wma=_WMAname or _redraw_sym) then
theField = theVtab.FindField(_IDtype)
_station = theVtab.ReturnValue(theField,record).AsString
theField = theVtab.FindField("Latitude")
lat = theVtab.ReturnValue(theField,record)
theField = theVtab.FindField("Longitude")
lon = theVtab.ReturnValue(theField,record)
geopoint = Point.Make(lon,lat)
prjpoint = geopoint.ReturnProjected(thePrj)
_xSymbol = prjpoint.GetX
_ySymbol = prjpoint.GetY
_ItemsList = List.Make
_ClassList = List.Make
_ColourList = List.Make
_SeqnsList = List.Make
_ValueList = List.Make
classtring = _station
Valid = true
if (_UseMissing.Not) then
'Check that all the values required for the symbol are available (nXxx field for medXxx):
for each fieldname in shortlist 'FieldList
for each key in _UseKeys
if (fieldname.asString=key.AsString) then
keyList = _UseVariables.Get(key)
theField = theVTab.FindField(key)
theValue = theVtab.ReturnValue(theField,record)
if (theValue<0) then
Valid = false
end
end
end
end
end
if (Valid) then
for each fieldname in shortlist 'FieldList
for each key in _UseKeys
'MsgBox.Info( fieldname.AsString, key.AsString ) 'dont use this msgbox for full data set!
if (fieldname.asString=key.AsString) then
'Check that 5 or more values were used for the median:
FldLen = key.AsString.Count-3
nKey = "n"+key.AsString.Right(FldLen)
'MsgBox.Info( nKey.AsString, "FIELD"++fieldname.AsString )
theField = theVTab.FindField(nkey.AsString)
if (theField<>nil) then
theValue = theVtab.ReturnValue(theField,record)
else
'some fields don't have an "n"
theValue = 5
end
if ((theValue>=5) or _LblSymbol) then
keyList = _UseVariables.Get(key)
theField = theVTab.FindField(key)
theValue = theVtab.ReturnValue(theField,record)
seqnum = keyList.Get(0)
type = keyList.Get(1)
ncuts = keyList.Get(2)
ncutsn = ncuts+2 ' was 3
'Match the value to the cutpoints:
if (type=1) then
if (theValue>=0) then
class = 0
end
class = ncuts
for each ncut in ncutsn..3 by -1 'why must arrays start at 0?!
cutpoint = keyList.Get(ncut)
if (theValue<cutpoint) then
class = ncut-3
end
end
colour = class
end
if (type=2) then ' the tricky case of domestic pH:
if (theValue>=0) then
colour = 0
class = 0
end
if (theValue<keyList.Get(3)) then
colour = 0
class = 4
end
if ((theValue>keyList.Get(3)) and (theValue<=keyList.Get(4))) then
colour = 1
class = 3
end
if ((theValue>keyList.Get(4)) and (theValue<=keyList.Get(5))) then
colour = 2
class = 2
end
if ((theValue>keyList.Get(5)) and (theValue<=keyList.Get(6))) then
colour = 3
class = 1
end
if ((theValue>keyList.Get(6)) and (theValue<keyList.Get(7))) then
colour = 4
class = 0
end
if ((theValue>=keyList.Get(7)) and (theValue<keyList.Get(8))) then
colour = 5
class = 1
end
if ((theValue>=keyList.Get(8)) and (theValue<keyList.Get(9))) then
colour = 6
class = 2
end
if ((theValue>=keyList.Get(9)) and (theValue<keyList.Get(10))) then
colour = 7
class = 3
end
if (theValue>keyList.Get(10)) then
colour = 8
class = 4
end
end
if (type=3) then ' the tricky case of agricultural pH:
if (theValue>=0) then
class = 0
end
cutpoint1 = keyList.Get(3)
cutpoint2 = keyList.Get(4)
if ((theValue>cutpoint1) and (theValue<cutpoint2)) then
class = 0
colour = 1
end
if ((theValue<=cutpoint1)) then 'acid
class = 1
colour = 0
end
if ((theValue>=cutpoint2)) then 'base
class = 2
colour = 2
end
end
if (class>0) then
'MsgBox.Info( key.AsString++"="++class.AsString++"("++theValue.AsString++")", _station )
end
if (theValue<0) then
'Set the class to "missing" (-1):
class = -1
colour = class
end
classtring = classtring++key.AsString++"="++class.AsString
_ClassList.Add(class)
_ColourList.Add(colour)
_ItemsList.Add(key)
_SeqnsList.Add(seqnum)
_ValueList.Add(theValue)
end
end
end
end
nowDate = Date.Now
nowDate.SetFormat("yyyy-MM-dd")
nowTime = Date.Now
nowTime.SetFormat("hhhh:m:s")
dtStamp = nowDate.asString++" "++nowTime.AsString
av.SetStatus(100*(record/numrecs))
av.ShowMsg(dtStamp++"("+record.AsString+")"++classtring)
textstring = _UseType++dtStamp++"("+(record+1).AsString+")"++classtring
linFile = LineFile.Make(aFileName,#FILE_PERM_MODIFY)
linFile.GotoEnd
linFile.WriteElt(textstring)
linFile.Close 'close file for debug data
av.Run("JuanitaPie",{})
end
end
end
'linFile.close 'close file for debug data
av.ClearMsg
av.ClearStatus
theView.GetGraphics.Invalidate