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Re: ESRI shape file [message #72340 is a reply to message #25781]

Sat, 28 August 2010 04:31

Klemen
Messages: 80
Registered: July 2009

Member

There is an example of creating a point shape file in Help as Max said
(see below). Creating a polygon is sligtly more difficult; if you need
such an example let me know.
Cheers, Klemen

PRO ex_shapefile_newfile

;Create the new shapefile and define the entity type to Point
mynewshape=OBJ_NEW('IDLffShape', FILEPATH('cities.shp', $
SUBDIR=['examples', 'data']), /UPDATE, ENTITY_TYPE=1)

;Set the attribute definitions for the new Shapefile
mynewshape->AddAttribute, 'CITY_NAME', 7, 25, $
PRECISION=0
mynewshape->AddAttribute, 'STAT_NAME', 7, 25, $
PRECISION=0

;Create structure for new entity
entNew = {IDL_SHAPE_ENTITY}

; Define the values for the new entity
entNew.SHAPE_TYPE = 1
entNew.BOUNDS[0] = -104.87270
entNew.BOUNDS[1] = 39.768040
entNew.BOUNDS[2] = 0.00000000
entNew.BOUNDS[3] = 0.00000000
entNew.BOUNDS[4] = -104.87270
entNew.BOUNDS[5] = 39.768040
entNew.BOUNDS[6] = 0.00000000
entNew.BOUNDS[7] = 0.00000000
entNew.N_VERTICES = 1 ; take out of example, need as workaround

;Create structure for new attributes
attrNew = mynewshape ->GetAttributes(/ATTRIBUTE_STRUCTURE)

;Define the values for the new attributes
attrNew.ATTRIBUTE_0 = 'Denver'
attrNew.ATTRIBUTE_1 = 'Colorado'

;Add the new entity to new shapefile
mynewshape -> PutEntity, entNew

;Note that because this is a new shapefile, the index of
;the new entity is zero.
entity_index=0

;Add the Colorado attributes to new shapefile.
mynewshape -> SetAttributes, entity_index, attrNew

;Close the shapefile
OBJ_DESTROY, mynewshape

END

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[Message index]

		esri shape file By: HILBERMAN on Tue, 17 July 2001 14:14
		Re: ESRI shape file By: d.poreh on Mon, 30 August 2010 03:05
		Re: ESRI shape file By: Klemen on Sat, 28 August 2010 04:31
		Re: ESRI shape file By: ca11h on Sun, 29 June 2014 14:43
		Re: ESRI shape file By: Maxwell Peck on Fri, 27 August 2010 15:22
		Re: ESRI shape file By: mankoff on Fri, 27 August 2010 07:16

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