Those two steps makes the whole creation fo the sets straigthforward, withotu having to bither about getting the unique values for each field.
In a third step you can apply styles to the sets, by need to recurisvely calling SetIconColor(), and SetIcon() to each of the 60 sets. Armando On Tue, Jul 24, 2012 at 3:04 PM, swag_ner_pth <[email protected]>wrote: > ** > > > I'm unsure how this would work for applying colors and icons based on > different criteria for both. If I use CreateExpression() I would end up > with 60 different unique values but how does CreateGroup() know how to > apply the three colors and different icons? > > > --- In [email protected], Armando Scalise <armando.scalise@...> > wrote: > > > > A quick suggestion > > > > 1) use CreateExpression() to create a temporary field (lets call it C) > that > > is the sum of A and B > > 2) CreateGroup() on field C using 60 for the number of classes > > > > > > Good luck > > > > > > On Mon, Jul 23, 2012 at 8:53 PM, swag_ner_pth <swag_ner_pth@...>wrote: > > > > > ** > > > > > > > > > > Hello, > > > > > > What I am trying to do is change the color and icon used for points > based > > > on two different fields contained in the table. However when I try this > > > using themes, one theme will overwrite the other. > > > > > > I've been testing out the GISDK and with it I can create a selection > set > > > to change the color programmatically. I can't change the icon > > > programmatically with unique values (assigning random icons is > possible). I > > > can't figure out a way to apply both of these changes. > > > > > > The fields I'm using are both strings. The one field, let's call it > field > > > A, has 3 unique values and the other, field B, has 20 unique values. I > want > > > to create a new set for every combination of the two fields. So I > would end > > > up with 60 sets. > > > > > > I'm torn between trying to create this functionality with selection > sets > > > using SelectByQuery() or themes using CreateTheme() and associated > methods. > > > > > > I can logically do it with sets. For instance, to select all fields > using > > > one of the unique values and color them red I can do this: > > > > > > qry1 = 'Select * Where A = "CurrentActive" ' > > > SelSet = SelectByQuery( "Active", "Several", qry1,) > > > SetIconColor("Active", ColorRGB(65535, 0, 0)) > > > > > > That creates a new set. Here is how I would do it currently with having > > > limited knowledge of the GISDK. In order to apply icon changes, I would > > > have to select from the newly created set and create another set. Then > I > > > would reiterate until all of the unique values have sets. Then I would > > > delete the original set. ("Active" in the example.) > > > > > > But this seems unrefined and requires a lot of steps. I don't know how > to > > > find the unique values for field B. Then I'd have to parse the values > and > > > apply icon changes using SetIcon(). Because I'm making smaller sets, > I'd > > > again have to delete the source set. > > > > > > I'm unsure of where to start when it comes to using themes with the > GISDK. > > > I'm concerned about themes overwriting each other. I also don't know > how to > > > use strings in the CreateTheme() method. > > > > > > What might work is doing a theme for just the icons and then doing the > > > color changes using SelectByQuery. > > > > > > I welcome any and all advice. > > > > > > Thanks in advance. > > > > > > > > > > > > > > > > > -- > > Armando Scalise > > > > > -- Armando Scalise
