Hi Group: In relation to creating district boundaries please see this video: http://www.caliper.com/Video/Maptitude/Video-Territories.htm <http://www.caliper.com/Video/Maptitude/Video-Territories.htm> <http://www.caliper.com/Video/Maptitude/Video-Territories.htm> This shows several approaches, including the new Create Districts Tool. Maptitude Mapping Software <http://www.caliper.com> Group Moderator
--- In [email protected], "David" <david@...> wrote: > > After tweaking the selection sets, I do convert them using the Merge by Values tools. In fact, to get around the 512 limit in the past, I simply divided those large jobs by geographical region (though getting it done as one large job would save a lot of steps). > > I'll try the DK solution first chance I get. Thanks for all your help!!!! > > > > > --- In [email protected], "dr_haspel" mhaspel@ wrote: > > > > > > > > David, > > > > The 512 limit is arbitrary and imposed by the GUI, not the program itself. > > > > But before we look at bypassing that limit, let me ask you something. Have you considered using the "Merge by Value" (Tools... Geographic Analysis... Merge by Value) function instead? It seems to me that creating a new geographic file where each of these selection sets was simply its own polygon would be much more efficient. > > > > If that solution is truly no good for your purposes, you *can* define more than 512 classes via the DK, using the code below. For layer_name, put in the name of the layer you'd have active when invoking the color theme drop box; for field_name use the name that you would under "field" in the color theme drop box; for n_cats, use the maximum number of classes you think you'd need for your application: > > > > layer_name = "tl_2010_tabblock10" > > field_name = "GEOID10" > > n_cats = 1000 > > theme_name = CreateTheme("Districts", layer_name + "." + field_name, "Categories", n_cats, null) > > ShowTheme(null, theme_name) > > > > > > Then you can run "Selection... Select by Theme" from the GUI. I tested it successfully with 1,000 classes, but it took forever to run even on a high-end workstation under Mapt 6.0. > > > > Understand that we're pushing Maptitude beyond its designed limits. I take no responsibility for crashing Maptitude (or your entire computer for that matter). > > > > > > --- In [email protected], "David" <david@> wrote: > > > > > > > > > > > > To create districts, I click the Color Theme icon. I then choose my field and select [LIST of VALUES] from the dialog box that opens. For [Max Classes], I select the largest possible number which is 512. I then use [Select by Theme] to produce selection sets which I manually edit. > > > > > > For most of my projects, the 512 limitation isn't an issue. For a few projects, however, I need around a 1,000 maybe 1,500. > > > > > > Is there a way to increase the 512 maximum number of selection sets? ..say with a registry value or something? Any ideas for a work-around? > > > > > > Thanks!!!! > > > > > > P.S. And if I manage to increase the color theme 512 limitation, is there a limit on the number of selection sets? > > > > > > I'm running Maptitude 5 and Maptitude 2012. > > > > > >
