[Shapelib] Adding new shape to shapefile

[Vassilis Perantzakis]

Hi,

 

Did you use first the shpcreate as you do now and then the shpopen (this is
correct)? Or did you replace the shpcreate with the shpopen (this is false)

 

  _____  

From: shapelib-bounces at lists.maptools.org
[mailto:shapelib-bounces at lists.maptools.org] On Behalf Of romain didier
Sent: Thursday, May 29, 2008 7:00 PM
To: Shapelib Development
Subject: Re: [Shapelib] Adding new shape to shapefile

 

I'm sorry, that doesn't work anymore... 

My file is not even created !

 

Thank you for your quick reply

 

2008/5/29 Vassilis Perantzakis <vaspervnp at yahoo.gr>:

If it works like in Delphi, after creating the file you should close it with

shpFile.SHPClose(newShp);

and then reopen it with

IntPtr newShp = shpFile.SHPOpen(@"\SD-MMCard\TestParcelle\ARRETBUS.shp ",
"rb+")

to insure appending mode. I believe the same goes for the dbf file.

Let me know if it helped.

-----Original Message-----
From: shapelib-bounces at lists.maptools.org
[mailto:shapelib-bounces at lists.maptools.org] On Behalf Of thecrashteam
Sent: Thursday, May 29, 2008 6:31 PM
To: shapelib at lists.maptools.org
Subject: [Shapelib] Adding new shape to shapefile


Hello,



First, sorry for my English, I'll promise you I'll do my best.



I'm in a training period in order to prepare my degree and I've in charge of
the development of a PPC application in C# using shapelib.

I read some posts in this forum about adding shapes in shapefile, and I
apply some parts of code in my application but, I have a problem with the
SHPWriteObject function. The application runs correctly but nothing is
written in my shapefile. Someone could help me ? Do I make a mistake in my
code ?



Well thank you for your help



Romain





My code :

IntPtr newShp = shpFile.SHPCreate(@"\SD-MMCard\TestParcelle\ARRETBUS.shp",
ShapeFile.ShapeFile.ShapeType.Point);

double[] dblX = new double[1];

dblX[0] = 803606;

double[] dblY = new double[1];

dblY[0] = 800000;

IntPtr newDbf = shpFile.DBFCreate(@"\SD-MMCard\TestParcelle\ARRETBUS.dbf");

IntPtr pso = shpFile.SHPCreateObject(ShapeFile.ShapeFile.ShapeType.Point, 1,
1, null, null, 1, dblX, dblY, null, null);

IntPtr psObject =
shpFile.SHPCreateSimpleObject(ShapeFile.ShapeFile.ShapeType.Point, 1, dblX,
dblY, null);

shpFile.SHPWriteObject(newShp, -1, psObject);

shpFile.SHPWriteObject(newShp, -1, pso);

shpFile.DBFClose(newDbf);

shpFile.SHPClose(newShp);
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