MI MapX newbie question: using unbound data in a point layer

[Mats Johansson]

Hi!

I'm obviously new to MapX, and really not a GIS person. However, I need to get this particular thing to work:

 

I have a point maplayer, consisting of train stations. I'd like to use a variantarray of station data and create an unbound dataset, binding the data to the train stations. I think I've succeeded to create the dataset correctly, but when I create a GradSymbol theme, the data doesn't show in the map (I'd like to get a symbol to the side of each and every station in the variantarray). What am I doing wrong?

 

The code looks like this:

 

    m_vntData(1, 1) = "station 1"
    m_vntData(1, 2) = 20000
    m_vntData(2, 1) = "station 2"
    m_vntData(2, 2) = 50000
    m_vntData(3, 1) = "station 3"
    m_vntData(3, 2) = 80000
    m_vntData(4, 1) = "station 4"
    m_vntData(4, 2) = 120000

    flds.Add "station", "sign", miAggregationIndividual, miTypeString
    flds.Add "amount", "amount", miAggregationSum, miTypeNumeric
   
    Set ds = mapSverige.Datasets.Add(miDataSetUnbound, Nothing, "Stationdataset", 1, , "station", flds)
    ds.Themes.Add miThemeGradSymbol, "amount", "swetheme"

 

Obviously I must be doing something wrong, does anyone have a clue?

 

TIA,

 

Mats Johansson