gvSIG bugs #2711

Calculo de area en la calculadora de campos

Added by Joaquín del Cerro Murciano almost 10 years ago. Updated almost 10 years ago.

Status:Closed% Done:

0%

Priority:NormalSpent time:-
Assignee:Joaquín del Cerro Murciano
Category:-
Target version:2.1.0-2239-testing
Severity:Minor Add-on version:
gvSIG version:2.1.0 Add-on build:
gvSIG build: Add-on resolve version:
Operative System: Add-on resolve build:
Keywords: Proyecto:
Has patch: Hito:
Add-on name:Unknown

Description

Cuando se utiliza la calculadora de campos para añadir perimetros o areas el usuario no sabe en que va a obtener el resultado. Deberia indicar que el resutado sera en metros si la capa esta proyectada en UTM y en grados decimales si esta en geograficas.

Associated revisions

Revision 30
Added by Joaquín del Cerro Murciano almost 10 years ago

Añadida a la descripcion de la area y perimetro que usa las unidades de la vista, refs #2711

History

#1 Updated by Álvaro Anguix almost 10 years ago

Esto...un área o un perímetro... ¿puede estar en grados?

#2 Updated by Antonio Falciano almost 10 years ago

Hi all,
if the view CRS is a geographical one and the map units (always visible in the status bar) is meters, I'd expect that the calculated distances and areas are respectively in meters and squared meters. On the other side, a skilled user could ask if those distances are calculated with the great circle formula (fastest) or with Vincenty's one (more accurate). Adding such information about distance and area calculations in the Preferences could be a great (but not original) idea. ;)

#3 Updated by Joaquín del Cerro Murciano almost 10 years ago

Álvaro Anguix wrote:

Esto...un área o un perímetro... ¿puede estar en grados?

Me temo que si.

#4 Updated by Joaquín del Cerro Murciano almost 10 years ago

Antonio Falciano wrote:

Hi all,
if the view CRS is a geographical one and the map units (always visible in the status bar) is meters, I'd expect that the calculated distances and areas are respectively in meters and squared meters. On the other side, a skilled user could ask if those distances are calculated with the great circle formula (fastest) or with Vincenty's one (more accurate). Adding such information about distance and area calculations in the Preferences could be a great (but not original) idea. ;)

Pues no me habia dado cuenta.... al parecer si usa las unidades de la vista para calcular el perimetro y el area.

Sobre que algoritmo usa para calcular la distancia, por lo que he visto (yo no entiendo mucho de geo), usa algo que llama "distance Vincenty".

#5 Updated by Joaquín del Cerro Murciano almost 10 years ago

  • Status changed from New to Fixed

Me he limitado a añadir una coletilla al final de la descripcion de la operacion indicando que usa las unidades de la vista.

#6 Updated by Joaquín del Cerro Murciano almost 10 years ago

  • Target version changed from 2.1.0-2259-rc3 to 2.1.0-2239-testing

#7 Updated by Álvaro Anguix almost 10 years ago

  • Status changed from Fixed to Closed

Also available in: Atom PDF