Andrea, can you confirm if you are having the error when you remove the label offset ?
On 14 August 2013 09:37, Andrea Peri <aperi2...@gmail.com> wrote: > Hi, > > My theory is not true. > > I was able to create a featureset that like my image that will work when > the visible box clip it creating a multilinestring.. > > sorry for noise, > > My quest still go on. > > Regards, > > > > > 2013/8/13 Andrea Peri <aperi2...@gmail.com> >> >> Hi, >> Perhaps I found the explanation. >> >> The "angle follow" with OGR is using the >> BufferBuilder::bufferLineSingleSided >> That function seem don't work with a MultiLinestring . It necessary need a >> simple linestring. >> >> The question is that sometime the simple linestirng when is clipped from >> the visible bbox of the map to render, is transformed in a MultiLinestring. >> As showed in attached image. >> >> So a linestring geometry clipped by the visible bbox will become a >> multilinestring geometry and the bufferLineSingleSided will give error to >> put a "follow angle". >> >> Andrea. >> >> 2013/8/13 Andrea Peri <aperi2...@gmail.com> >>> >>> ok, thx. >>> I change to multiple scale. >>> >>> However I do a rapid check removing a label component, but the problem is >>> still here. >>> >>> Now I rewrite a more exact mapfile using two classes. >>> >>> Andrea. >>> >>> >>> >>> >>> 2013/8/13 thomas bonfort <thomas.bonf...@gmail.com> >>>> >>>> yes, that's incompatible. use multiple scale-dependant classes for now >>>> >>>> On 13 August 2013 18:26, Andrea Peri <aperi2...@gmail.com> wrote: >>>> > The two label are at different max/min scaledenominator. >>>> > The goal is to have little label size at low scales and bigger font >>>> > size at >>>> > bigger scales. >>>> > >>>> > However only one lable is active at one scale level. >>>> > >>>> > Is this incompatible with "follow" ? >>>> > >>>> > >>>> > >>>> > 2013/8/13 thomas bonfort <thomas.bonf...@gmail.com> >>>> >> >>>> >> why the double label? they seem to be the same, but in any case >>>> >> multiple labels are not supported for FOLLOW. >>>> >> >>>> >> On 13 August 2013 18:08, Andrea Peri <aperi2...@gmail.com> wrote: >>>> >> > I'm using spatialite 4.1.1, >>>> >> > so use ogr to access the db. >>>> >> > >>>> >> > LAYER >>>> >> > NAME "rt_topogr.50k.etichette.topon_idro_50k" >>>> >> > STATUS OFF >>>> >> > EXTENT 1554750.74 4678325.52 1771722.76 4924791.90 >>>> >> > TYPE LINE >>>> >> > CONNECTIONTYPE OGR >>>> >> > CONNECTION "/path-to-spatialite/zz_topografica.sqlite" >>>> >> > DATA "select PK_UID_2, TOPO_OK, GEOMETRY from topon_idro_50k" >>>> >> > PROJECTION >>>> >> > "+init=epsg:3003 +towgs84=0,0,0,0,0,0,0" >>>> >> > END >>>> >> > METADATA >>>> >> > "wms_title" "topon_idro_50k" >>>> >> > "wms_extent" "1554750.74 4678325.52 1771722.76 4924791.90" >>>> >> > END >>>> >> > LABELCACHE ON >>>> >> > MAXSCALEDENOM 60100 >>>> >> > MINSCALEDENOM 1 >>>> >> > CLASS >>>> >> > NAME '' >>>> >> > MAXSCALEDENOM 60100 >>>> >> > MINSCALEDENOM 1 >>>> >> > LABEL >>>> >> > TEXT '[TOPO_OK]' >>>> >> > COLOR 0 85 255 >>>> >> > OUTLINECOLOR 212 255 255 >>>> >> > OUTLINEWIDTH 1 >>>> >> > MAXSCALEDENOM 60100 >>>> >> > MINSCALEDENOM 40100 >>>> >> > FONT "LiberationSans-Regular" >>>> >> > TYPE truetype >>>> >> > SIZE 7 >>>> >> > ANGLE FOLLOW >>>> >> > OFFSET 15 99 >>>> >> > POSITION auto >>>> >> > PRIORITY 10 >>>> >> > MAXOVERLAPANGLE 180.0 >>>> >> > BUFFER 1 >>>> >> > FORCE OFF >>>> >> > PARTIALS FALSE >>>> >> > MINDISTANCE 200 >>>> >> > END >>>> >> > LABEL >>>> >> > TEXT '[TOPO_OK]' >>>> >> > COLOR 0 85 255 >>>> >> > OUTLINECOLOR 212 255 255 >>>> >> > OUTLINEWIDTH 1 >>>> >> > MAXSCALEDENOM 40100 >>>> >> > MINSCALEDENOM 1 >>>> >> > FONT "LiberationSans-Regular" >>>> >> > TYPE truetype >>>> >> > SIZE 9 >>>> >> > ANGLE FOLLOW >>>> >> > OFFSET 15 99 >>>> >> > POSITION auto >>>> >> > PRIORITY 10 >>>> >> > MAXOVERLAPANGLE 180.0 >>>> >> > BUFFER 1 >>>> >> > FORCE OFF >>>> >> > PARTIALS FALSE >>>> >> > MINDISTANCE 200 >>>> >> > END >>>> >> > END >>>> >> > END >>>> >> > >>>> >> > >>>> >> > >>>> >> > >>>> >> > 2013/8/13 thomas bonfort <thomas.bonf...@gmail.com> >>>> >> >> >>>> >> >> there's something strange in your error message... the >>>> >> >> singleSidedBuffer stuff is in GEOS, and should have nothing to do >>>> >> >> in >>>> >> >> msOGRFileNextShape. post your whole mapfile layer. >>>> >> >> >>>> >> >> On 13 August 2013 17:42, Andrea Peri <aperi2...@gmail.com> wrote: >>>> >> >> > Hi, >>>> >> >> > >>>> >> >> > I tested trasforming the multilinestring dataset in a linestring >>>> >> >> > dataset >>>> >> >> > but >>>> >> >> > the error is still here. >>>> >> >> > >>>> >> >> > msDrawMap(): Image handling error. Failed to draw layer named >>>> >> >> > 'rt_topogr.50k.etichette.topon_idro_50k'. >>>> >> >> > >>>> >> >> > msOGRFileNextShape(): OGR error. IllegalArgumentException: >>>> >> >> > BufferBuilder::bufferLineSingleSided only accept linestrings >>>> >> >> > >>>> >> >> > So it is not really due to a multilinestring vs linestring >>>> >> >> > question. >>>> >> >> > >>>> >> >> > The quest carry on. >>>> >> >> > >>>> >> >> > >>>> >> >> > >>>> >> >> > 2013/8/13 Andrea Peri <aperi2...@gmail.com> >>>> >> >> >> >>>> >> >> >> Hi, >>>> >> >> >> >>>> >> >> >> Try.ing to set a label on a MULTILINESTRING dataset. >>>> >> >> >> >>>> >> >> >> I set a label with Follow capability. >>>> >> >> >> >>>> >> >> >> ANGLE FOLLOW >>>> >> >> >> >>>> >> >> >> But I'm having this error: >>>> >> >> >> >>>> >> >> >> msOGRFileNextShape(): OGR error. IllegalArgumentException: >>>> >> >> >> BufferBuilder::bufferLineSingleSided only accept linestrings >>>> >> >> >> >>>> >> >> >> Is the Follow compatible with a MultiLinestring dataset or need >>>> >> >> >> only >>>> >> >> >> simple linestrings ? >>>> >> >> >> >>>> >> >> >> Thx, >>>> >> >> >> >>>> >> >> >> -- >>>> >> >> >> ----------------- >>>> >> >> >> Andrea Peri >>>> >> >> >> . . . . . . . . . >>>> >> >> >> qwerty àèìòù >>>> >> >> >> ----------------- >>>> >> >> > >>>> >> >> > >>>> >> >> > >>>> >> >> > >>>> >> >> > -- >>>> >> >> > ----------------- >>>> >> >> > Andrea Peri >>>> >> >> > . . . . . . . . . >>>> >> >> > qwerty àèìòù >>>> >> >> > ----------------- >>>> >> >> > >>>> >> >> > _______________________________________________ >>>> >> >> > mapserver-users mailing list >>>> >> >> > mapserver-users@lists.osgeo.org >>>> >> >> > http://lists.osgeo.org/mailman/listinfo/mapserver-users >>>> >> >> > >>>> >> > >>>> >> > >>>> >> > >>>> >> > >>>> >> > -- >>>> >> > ----------------- >>>> >> > Andrea Peri >>>> >> > . . . . . . . . . >>>> >> > qwerty àèìòù >>>> >> > ----------------- >>>> > >>>> > >>>> > >>>> > >>>> > -- >>>> > ----------------- >>>> > Andrea Peri >>>> > . . . . . . . . . >>>> > qwerty àèìòù >>>> > ----------------- >>> >>> >>> >>> >>> -- >>> ----------------- >>> Andrea Peri >>> . . . . . . . . . >>> qwerty àèìòù >>> ----------------- >> >> >> >> >> -- >> ----------------- >> Andrea Peri >> . . . . . . . . . >> qwerty àèìòù >> ----------------- > > > > > -- > ----------------- > Andrea Peri > . . . . . . . . . > qwerty àèìòù > ----------------- _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users