shape che mette in crash Qgis 1.8

[emanuele possiedi]

Ciao,
ho un problema con il poligono di uno shape.
Se provo a fare l'interrogazione con Qgis 1.8 SO Windows XP, il sistema mi va
in crash.
Se provo a selezionare il poligono e salvarlo con un altro nome non ho
problemi di salvataggio, ma
continuo ad avere problemi nell'interrogazione (mi va in crash).
Ho provato a spezzare il poligono in due (con la funziona taglia) e mi
compare
il messaggio:
"La geometria non è valida. Riparala prima di dividerla".
Ho provato ad importarlo in grass ma continuo ad avere gli stessi problemi.
Lo stesso shape con arview 3.3 e Udig viene interrogato senza problemi.
Come posso provare a riparare la geometria?
Grazie


Link di download
http://we.tl/L7sEZbevNl

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630 iscritti al 1.12.2012

[pcav]

Il 11/01/2013 12:37, [hidden email] ha scritto:

> Ciao,
> ho un problema con il poligono di uno shape.
> Se provo a fare l'interrogazione con Qgis 1.8 SO Windows XP, il sistema mi va
> in crash.
> Se provo a selezionare il poligono e salvarlo con un altro nome non ho
> problemi di salvataggio, ma
> continuo ad avere problemi nell'interrogazione (mi va in crash).
> Ho provato a spezzare il poligono in due (con la funziona taglia) e mi
> compare
> il messaggio:
> "La geometria non è valida. Riparala prima di dividerla".
> Ho provato ad importarlo in grass ma continuo ad avere gli stessi problemi.
> Lo stesso shape con arview 3.3 e Udig viene interrogato senza problemi.
> Come posso provare a riparare la geometria?

provato, con la versione di sviluppo l'interrogazione viene eseguita correttamente;
il taglio, invece, provoca il freeze dell'applicazione.
credo sia il caso di aprire un ticket, allegando il file.
saluti.
--
Paolo Cavallini - Faunalia
www.faunalia.eu
Full contact details at www.faunalia.eu/pc
Nuovi corsi QGIS e PostGIS: http://www.faunalia.it/calendario
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[stefano campus]

lo shape ha 114 errori!
esegui il test sulla validità della geometria e te ne accorgerai.
vettore-->strumenti di geometria-->controlla validità di geometria

[Giovanni Manghi-2]

> provato, con la versione di sviluppo l'interrogazione viene eseguita correttamente;
> il taglio, invece, provoca il freeze dell'applicazione.
> credo sia il caso di aprire un ticket, allegando il file.

confermo che su master l'identify funziona, sulla 1.8 é un problema
conosciuto, ossia quello dell'essere estremamente lento quando
identifica features molto complesse (quella in questione ha 70k
vertici),

se credete il ticket relativo

http://hub.qgis.org/issues/4819

si puó anche riaprire.... in effetti con features molto complesse (ho
appena provato con una con 1M vertici) é ancora abbastanza lento, in
particolare su Windows (mentre su Linux sulla stessa macchina é varie
volte piú rapido).

Per quanto riguarda gli errori (riportati di seguito): questi appaiono
solo se nelle opzioni di QGIS si usa "validate geometries" settato su
"qgis", mentre se si setta su "geos" non appare nessun errore. In
quets'ultimo caso lo strumento "split" dovrebbe forse funzionare
meglio, magari lasciano splittare anche una geometria non valida?




-- Giovanni --



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2,Geometry has 114 errors.
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