Python gdb.read_channel error

EdwardBiegert

I updated some files to resolve some scipy.linalg issues and now my simple, old code that used to work no longer runs. The code creates a Geosoft context, prints out the geosoft userid, opens a Geosoft data base, and reads data from a channel. It now fails at this line: X_data, fid = gdb.read_channel(line, 'X_WGS84_UTM10N')

Errors are listed below. How can I resolve this problem?

I had done a conda update --all and then after my geosoft code failed to execute, I uninstalled geosoft and then reinstalled using --no-cache-dir to force a new download in case the file was somehow corrupted.
Now running Python 3.7.2


Error Output:

C:\ProgramData\Anaconda3\python.exe C:/Users/EKB/PycharmProjects/Test_Project/GX_GDB_Line_Orientation.py

biegert@alumni.rice.edu
Traceback (most recent call last):
File "C:/Users/EKB/PycharmProjects/Test_Project/GX_GDB_Line_Orientation.py", line 28, in
X_data, fid = gdb.read_channel(line, 'X_WGS84_UTM10N') # Obtain coordinates of points on the line
File "c:\programdata\anaconda3\lib\site-packages\geosoft\gxpy\gdb.py", line 1520, in read_channel
return vv.get_data(vv.dtype)[0], vv.fid
File "c:\programdata\anaconda3\lib\site-packages\geosoft\gxpy\vv.py", line 412, in get_data
npd = self._get_data_np(start, n, dtype)
File "c:\programdata\anaconda3\lib\site-packages\geosoft\gxpy\vv.py", line 251, in _get_data_np
npd.flags['WRITEABLE'] = True
ValueError: cannot set WRITEABLE flag to True of this array

Process finished with exit code 1



Geosoft install seems to have gone without incident:


(base) C:\Users\EKB>pip install --no-cache-dir geosoft
Collecting geosoft
Downloading https://files.pythonhosted.org/packages/9d/79/852eaf0dc5910c9016fe7898b8140098bd4f66ae4a917af09ee41d84cf3d/geosoft-9.5.0-cp37-none-win_amd64.whl (4.4MB)
100% |████████████████████████████████| 4.4MB 6.7MB/s
Requirement already satisfied: requests in c:\programdata\anaconda3\lib\site-packages (from geosoft) (2.21.0)
Requirement already satisfied: pandas in c:\programdata\anaconda3\lib\site-packages (from geosoft) (0.24.1)
Requirement already satisfied: numpy in c:\programdata\anaconda3\lib\site-packages (from geosoft) (1.16.1)
Requirement already satisfied: chardet<3.1.0,>=3.0.2 in c:\programdata\anaconda3\lib\site-packages (from requests->geosoft) (3.0.4)
Requirement already satisfied: certifi>=2017.4.17 in c:\programdata\anaconda3\lib\site-packages (from requests->geosoft) (2018.11.29)
Requirement already satisfied: idna<2.9,>=2.5 in c:\programdata\anaconda3\lib\site-packages (from requests->geosoft) (2.8)
Requirement already satisfied: urllib3<1.25,>=1.21.1 in c:\programdata\anaconda3\lib\site-packages (from requests->geosoft) (1.24.1)
Requirement already satisfied: python-dateutil>=2.5.0 in c:\programdata\anaconda3\lib\site-packages (from pandas->geosoft) (2.7.5)
Requirement already satisfied: pytz>=2011k in c:\programdata\anaconda3\lib\site-packages (from pandas->geosoft) (2018.9)
Requirement already satisfied: six>=1.5 in c:\programdata\anaconda3\lib\site-packages (from python-dateutil>=2.5.0->pandas->geosoft) (1.12.0)
Installing collected packages: geosoft
Successfully installed geosoft-9.5.0

TomPopowski

Hi Ed, there is an incompatibility in the most recent numpy 1.16 release. You can resolve it by a downgrade to numpy 1.15.

see https://stackoverflow.com/questions/54210073/pd-read-df-throws-cannot-set-writable-flag-to-true-of-this-array

EdwardBiegert

Thanks!

NickWilliams

@TomPopowski I'm having a similar problem with ValueError: cannot set WRITEABLE flag to True of this array errors in Anaconda3 2019.03. Unfortunately downgrading to numpy 1.15 seems to break my Anaconda installation. I've had to reinstall Anaconda several times. Is a Geosoft update coming?