Re: st: tmap question

[Maurizio Pisati <maurizio.pisati@galactica.it>]

Dear Scott,
as you correctly noticed, the x- and y-coordinates of the label reference 
points MUST belong in the dataset currently in memory. Now, it looks like 
in your "main" file these coordinates are named LON and LAT. Therefore, 
provided LON and LAT are expressed in the same units as _X and _Y in the 
map file, your command should be:

tmap choropleth sr if id!=13 & id!=56, id(id) map(uscoord.dta) 
palette(Blues) title(`"`"Sex Ratios for 18-24 year-olds, 2000"'"') 
subtitle("White Americans") addplot(label sr if id!=13 & id!=56, x(LON) y(LAT))

Best,
Maurizio



At 21.13 02/10/2006, you wrote:

> I'm using tmap 2.0 and had a question about the addplot() command.  I
> have a variable called "sr" which is the ratio of women to men at the
> United States state level.  I would like to have added to the map the
> abbreviation for each of the United States states.  I appear to be
> having trouble with the xplot and yplot syntax within addplot.  For
> instance, here is the simple map I've made without the addplot.
>
> tmap choropleth sr if id!=13 & id!=56, id(id) map(uscoord.dta) palette 
> (Blues) title(`"`"Sex Ratios for 18-24 year-olds, 2000"'"') subtitle 
> ("White Americans")
>
> I would like to now add the state abbreviation to the map, making it
> easier to interpret.  I'm reading a user guide written by Maurizio
> Pisati, and he writes that addplot requires the x- and y-coordinates
> of the variable name.  Contained in uscoord.dta are 3 variables:
> _ID, _X and _Y.  So I type the following:
>
> tmap choropleth sr if id!=13 & id!=56, id(id) map(uscoord.dta) palette 
> (Blues) title(`"`"Sex Ratios for 18-24 year-olds, 2000"'"') subtitle 
> ("White Americans") addplot(label sr if id!=13 & id!=56, x(X) y(Y))
>
> But this elicits an error, saying that the syntax for addplot is
> incorrect.  I am assuming that the problem lies with the use of the
> x- and y-coordinates.  And reading through Dr. Pisati's user guide
> more closely, I notice in an example that his x- and y-coordinates
> appear to be in the main using file - not in his coordinates file.
>
> Here's the variables I have for me main file:
>
> STATE
> NAME
> FIPS
> LON
> LAT
> id
> fip
> sr
>
> Any help is appreciated.
> *
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