Do you see the same behavior if you use |lower_than = dthetas.a <
-tau/2|
Yes I do.
|lower_than = eptm.dthetas.a < -np.pi
eptm.dthetas.a[lower_than] +=2 * np.pi
ValueError|
This also rises an error:
|graph.set_vertex_filter(vfilt)
colors.fa -=5
graph.set_vertex_filter(None)|
But not this:
|graph.set_vertex_filter(vfilt)
colors.a -=5 # Whole array
graph.set_vertex_filter(None)|
What numpy version are you using?
np.*version* >> ‘1.9.0.dev-61c699e’
Le 18/04/2014 11:22, Tiago de Paula Peixoto a écrit :
On 04/18/2014 11:06 AM, Guillaume Gay wrote:
Hi,
After updating graph-tool ( to version |2.2.31 (commit 245d1e2c, Thu Mar 27
11:28:39 2014 +0100)|), and a bunch of over things as I passed to Mint 15 to
Mint 16, I encounter the following value error, when I manipulates parts of a
PropertyMap (through indexing or via the |.fa| attribute (bellow, |dthetas| is
an edge propertymap on a graph):
|lower_than = [dthetas.a < -tau/2.]
dthetas.a[lower_than] += tau
ValueError: output array is read-only|
Note that the following doesn't rise the error:
| lower_than = [dthetas.a < -tau/2.]
dthetas.a[lower_than] = dthetas.a[lower_than] + tau|
It also happen when I filter a graph and do for example |eprop.fa *= 2|
I don't observe this. What numpy version are you using?
Do you see the same behavior if you use
lower_than = dthetas.a < -tau/2.
i.e. without the square brackets?
Best,
Tiago
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