Created
February 26, 2019 11:31
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Excel VBA function to Google Geocode
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Function GoogleGeocode(address As String) As String | |
Dim strAddress As String | |
Dim strQuery As String | |
Dim strLatitude As String | |
Dim strLongitude As String | |
strAddress = URLEncode(address) | |
'Assemble the query string | |
strQuery = "http://maps.googleapis.com/maps/api/geocode/xml?" | |
strQuery = strQuery & "address=" & strAddress | |
strQuery = strQuery & "&sensor=false" | |
'define XML and HTTP components | |
Dim googleResult As New MSXML2.DOMDocument | |
Dim googleService As New MSXML2.XMLHTTP | |
Dim oNodes As MSXML2.IXMLDOMNodeList | |
Dim oNode As MSXML2.IXMLDOMNode | |
'create HTTP request to query URL - make sure to have | |
'that last "False" there for synchronous operation | |
googleService.Open "GET", strQuery, False | |
googleService.send | |
googleResult.LoadXML (googleService.responseText) | |
Set oNodes = googleResult.getElementsByTagName("geometry") | |
If oNodes.Length = 1 Then | |
For Each oNode In oNodes | |
strLatitude = oNode.ChildNodes(0).ChildNodes(0).Text | |
strLongitude = oNode.ChildNodes(0).ChildNodes(1).Text | |
GoogleGeocode = strLatitude & "," & strLongitude | |
Next oNode | |
Else | |
GoogleGeocode = "Not Found (try again, you may have done too many too fast)" | |
End If | |
End Function | |
Public Function URLEncode(StringVal As String, Optional SpaceAsPlus As Boolean = False) As String | |
Dim StringLen As Long: StringLen = Len(StringVal) | |
If StringLen>0 Then | |
ReDim result(StringLen) As String | |
Dim i As Long, CharCode As Integer | |
Dim Char As String, Space As String | |
If SpaceAsPlus Then Space = "+" Else Space = "%20" | |
For i = 1 To StringLen | |
Char = Mid$(StringVal, i, 1) | |
CharCode = Asc(Char) | |
Select Case CharCode | |
Case 97 To 122, 65 To 90, 48 To 57, 45, 46, 95, 126 | |
result(i) = Char | |
Case 32 | |
result(i) = Space | |
Case 0 To 15 | |
result(i) = "%0" & Hex(CharCode) | |
Case Else | |
result(i) = "%" & Hex(CharCode) | |
End Select | |
Next i | |
URLEncode = Join(result, "") | |
End If | |
End Function |
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