Sign up using Email and Password. Interleaved reading Due to the nature of OSM files and how the driver works internally, the default reading mode that works per-layer might not work correctly, because too many features will accumulate in the layers before being consumed by the user application. Do you also that gdal-data directory in the path? Sign up using Email and Password. For example, let’s consider the following simplified XML content:. We have encountered such issues with a few in-tree drivers, and fixed them.

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For indexation of nodes, a custom mechanism not relying on SQLite is used by default indexation of ways to solve relations is still relying on SQLite.

# (OSM: isn’t loaded at all) – GDAL

Home Questions Tags Users Unanswered. Last modified 2 years ago Last modified on Oct 8, 6: That’s all I found out. Download in other formats: Internal working and performance tweaking The driver will use an internal SQLite database to resolve geometries. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. GetNextFeatureas the later might have a slow, incomplete or stub implementation.

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the ozm is subject to these policies. Some vector formats mix features that belong to different layers in an interleaved way, which make the current feature iteration per layer rather inefficient this requires for each ossm to read the whole file.


If you stil get the “Cannot find osmconf. The existing capability of writing features geal layers in random order, that is supported by most drivers with output capabilities, is formalized with a new dataset capability flag.

OSM – OpenStreetMap XML and PBF

For example all layers except nodes. GetNextFeature on the layers of this dataset.

For the use cases we want to address knowing quickly the total number of features of the dataset is not doable. One could wonder why this is needed given that GetNextFeature?

I’m facing the same problem, after trying to use gdal from a python wrapper: Unable to open datasource C: On return, the pointed value might be negative if determining the progress is not possible.

The filenames must end with. Regarding the choice of the range [0,1]this is to be consistent with the range accepted by GDAL progress functions.

How did you install and run GDAL? Sign up using Facebook.


[gdal-dev] How does GDAL OSM driver deal with closed ways?

Stack Overflow works best with JavaScript enabled. The driver will be first able to complete the building of feature B before emitting feature A. Post as a guest Name.

For whole gdaal file, the effect of this option will be less efficient. How did you set the environment variables? The progress percentage output is redundant with the progress callback mechanism, and the latter could be used to get the former, however it may be a bit convoluted.

This is just a provision for now, since that cannot currently happen. Sign up using Facebook. It can speed up operations significantly.

RFC 66 : OGR random layer read/write capabilities

Your kind help would be greatly appreciated. Spatial filtering Due to way. This method takes into account spatial and attribute filters set on layers that will be iterated upon.