fortify.map distort polygons of a shapefile

[Manuel Spínola]

Dear list members,

I am using fortify.map to plot a shapefile but the polygons of the shapefile appear distorted.  Is there any solution to this problem?

Manuel

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Manuel Spínola, Ph.D.
Instituto Internacional en Conservación y Manejo de Vida Silvestre
Universidad Nacional
Apartado 1350-3000
Heredia
COSTA RICA
mspi...@una.cr
mspin...@gmail.com
Teléfono: (506) 8706 - 4662
Personal website: Lobito de río
Institutional website: ICOMVIS

[Roman Luštrik]

Can you provide a reproducible example?

Cheers,

Roman

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In God we trust, all others bring data.

[Manuel Spínola]

Dear Roman,

I found out that the distortion problem is with ggmap, but I know this is not the right place to ask the question for ggmap.  With ggplot the map looks right, so is not a problem of fortify.map.

Manuel