import ephem python library

[PhilippeDou]

Dear when i put install "ephem" in build.gradle app :

    _python {
        // If Chaquopy fails to find Python on your build machine, enable the following
        // line and edit it to point to a Python 3.4+ executable.
        // buildPython "C:/Python36/python.exe"

        staticProxy "calendrierchinois"
        extractPackages "Data"
        extractPackages "Xml"
        pyc {
            stdlib true
        }
        pip {
            install "ephem"
            install "pytz"
            install "jdcal"

        }
    }
    ndk {
        abiFilters "armeabi-v7a", "x86"
    }
}_

I have an error when android studio compile code :

_building 'ephem._libastro' extension
error: CCompiler.compile: Chaquopy cannot compile native code

---

ERROR: Failed to install ephem from https://files.pythonhosted.org/packages/c3/2c/9e1a815add6c222a0d4bf7c644e095471a934a39bc90c201f9550a8f7f14/ephem-3.7.6.0.tar.gz. For assistance, please raise an issue at https://github.com/chaquo/chaquopy/issues.
Chaquopy: Exit status 1
:app:generateDebugPythonRequirements FAILED

FAILURE: Build failed with an exception._

[mhsmith]

Thanks for the report, we'll look into it.

[mhsmith]

We've added the package to our repository, so it should work now.

[amjidkhanmohmand]

when I try to install biosppy library I get the same error as mentioned above by the other user

[mhsmith]

Please post the full build log.

[amjidkhanmohmand]

Thanks but the issue is resolved. The only issue remained is the size of the app i.e. when I install libraries, the size of the app increases and affects the performance as the app which I am going to deploy will run on different devices having different specifications. So, my question is how to reduce the size of the App?

[mhsmith]

The simplest way to shrink the app is to reduce the number of ABIs, as described in the documentation here.

For example, if you're releasing the app on Google Play, then you can include armeabi-v7a and arm64-v8a, and omit the x86 ABIs. Or if you're only using it on a small selection of devices which you control, you could reduce it to armeabi-v7a only, or arm64-v8a only if your devices are new enough.

[amjidkhanmohmand]

[Moved to #238]

[amjidkhanmohmand]

`import matplotlib.pyplot as plt
from biosppy import storage
from biosppy.signals import ecg

def test():
x=[1,2,3,4]
y=[4,3,2,1]
plt.plot(x,y)
plt.show()
return "Hello World with Chaquopy"

def ecgAlgo():
i=0
x,y=[],[]
fl=open('Mehran.txt','r')
for l in fl:
if(l!="\n"):
y.append(int(l))
x.append(i)
i+=1
fl.close()
y=y[10:]
out = ecg.ecg(signal=y[:1200], sampling_rate=100., show=False)
return out['rpeaks']`

I had written the above code but when i launch the app it exits with an error

[mhsmith]

Please create separate issues for separate problems. And include the full error message and stack trace, which you can probably find in the Logcat.

[amjidkhanmohmand]

Ok thanks for your support