Hi,
This is usually according to the locale. Try set "C" locale like this.
|cha*||old_locale =setlocale(LC_NUMERIC, "C");
before opening datasource
and reset it back after reading all fetures
||setlocale(LC_NUMERIC, |old_locale);
This is not the solution (I fixed it here
http://trac.osgeo.org/gdal/ticket/5461) but some kind of workaround.
Best regards,
Dmitry
27.07.2014 15:40, Thomas Sevaldrud пишет:
(Sorry about the repost, I forgot the subject tag in the previous one..)
Hi, I'm having a strange problem that appears to be related to the
GeoJSON driver in GDAL 1.11.0
When reading a polygon geometry in geographical lat/lon coordinates,
all my coordinate values are returned in integer degrees. When using
ogrinfo it dumps the coordinate values with correct decimals, so it
must be something I have done wrong... Here is the relevant code:
OGRDataSource *ds = OGRSFDriverRegistrar::Open(filename_.c_str(), FALSE
);
int num_layers = ds->GetLayerCount();
for(int i = 0; i < num_layers; i++)
{
OGRLayer* layer = ds->GetLayer(i);
layer->ResetReading();
OGRFeature* feature;
while((feature = layer->GetNextFeature()) != NULL)
{
OGRGeometry* geometry = feature->GetGeometryRef();
if(geometry == NULL)
continue;
int geom_type = wkbFlatten(geometry->getGeometryType());
if(geom_type == wkbPolygon)
{
OGRPolygon* ogr_poly = (OGRPolygon*)geometry;
OGRLinearRing* ext_ring = ogr_poly->getExteriorRing();
for(int j = 0; j < ext_ring->getNumPoints() - 1; j++)
{
double x = ext_ring->getX(j);
double y = ext_ring->getY(j);
...
Now, the x, and y values here are always truncated to integer values.
This does not happen with for example shp files.
Any ideas what I might have done wrong here?
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