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sagemanifolds / SageManifolds

Jupyter notebooks and documentation for SageManifolds
https://sagemanifolds.obspm.fr/
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SageManifolds on SageMath Cloud #2

Closed tobiasdiez closed 8 years ago

tobiasdiez commented 8 years ago

I have problems running the more advanced features of SageManifolds (like tangent spaces, Riemannian metrics, etc) on SageMath Cloud. For example, I get the following error

raise dummy_attribute_error AttributeError: 'DifferentiableManifold_with_category' object has no attribute 'metric'

I think the reason is that sage 7.3 includes only the rudimentary part of the manifolds package. How can I install manifolds 0.9.1 on the cloud (I tried the usual approach but internet access is blocked on the free account and in addition, I don't have write permission in the sage folder).

egourgoulhon commented 8 years ago

You are right, SageManifolds was installed in SageMathCloud when the latter was running Sage 6.10, but not in the Sage 7.3 version. Hopefully, it has been restored with the upgrade of SageMathCLoud to Sage 7.4. For instance, if you open a Jupyter worksheet, click on the "kernel" button, then to "Change kernel" and select "SageMath 7.4": then you will have access to the full SageManifolds (version 0.9.1).

tobiasdiez commented 8 years ago

Thanks!