Monthly Archives: July 2014

Stop 3-D plot crashing on Matlab over VNC

The process below is for Matlab R2014a and earlier. R2014b and newer do not support the opengl(‘neverselect’) command   Restart Matlab, and before doing anything type: opengl(‘neverselect’) Then at plotting time: figure set(gcf,’renderermode’,'manual’,'renderer’,'painters’) slice(..) and so on

Cygwin Python 3 pip install: Segmentation fault

Note: I get segmentation fault upon pip3.2 command, has anyone solved this? This was tested on Cygwin 1.7.31 with Python 3.2 and may be out of date when you read this Prereqs: python3-setuptools In cygwin type easy_install-3.2 pip to use pip3 type in Cygwin pip3.2

H5Labview and 1-D arrays

The current version of h5labview can completely crash Labview 2013 SP1 when using 1-D arrays. What I do to fix this is insert the “Build Array” into my 1-D array just before it hits HDF5 Write Data. On the Read Data, to get a 1-D array again, you can use Index Array with the […]

Find Gmail email with any attachment e.g. PDF

You can see for the types of advanced searches you can do with Gmail. For example, if I want to find all PDFs I sent to, I type in Gmail search filename:pdf or to find any email I sent to with any attachment: has:attachment

Ralink RT2800 Warning TX status “fix”

I have some of the ubiquitous USB Wifi sticks with a chipset using the Ralink rt2800 driver. I noticed that while it works fine, I got a lot of dmesg errors like: rt2800usb_txdone: Warning – Got TX status for an empty queue 2, dropping rt2800usb_entry_txstatus_timeout: Warning – TX status timeout for entry 14 in queue […]

installing LLVM-Py and Numba on Ubuntu 14.04

You need LLVM 3.3 (as of Numba 0.14–thanks for comments from ThyMythos and Raul). As of July 2014, LLVM-Py will not work with the default LLVM 3.4 in Ubuntu 14.04. sudo apt-get install llvm-3.3-dev Now we install LLVM-Py: sudo LLVM_CONFIG_PATH=/usr/bin/llvm-config-3.3 pip install llvmpy Now you can run the tests (optional) python -c “import llvm; llvm.test()” […]

Fixing SSH Access Denied for Github

Github suggests that you use the SSH Agent, but even that may not work when you have a lot of SSH keys. You need to setup your ~/.ssh/config file so that SSH to uses the correct SSH Public Key the first time. Here’s how. nano ~/.ssh/config and add the lines Host Hostname […]

Very pleased with Lenovo warranty service

My corporate X220 had the space bar get slightly intermittent after 4 years of hard use and abuse. Naturally the corporation had the maximum warranty coverage, but I didn’t want to have someone manhandling my computer. Instead, a few minutes on the phone with their Atlanta, Georgia tech support center saw me getting a Next-Day […]

upgrading to Scipy 0.14 via pip

you may first need to do sudo apt-get install liblapack-dev libatlas-dev libsparskit-dev libarpack2-dev gfortran libfftw3-dev libblas-dev before sudo pip install –upgrade scipy reference:

Spyder 2.3 missing rope for Python3

The just-released Spyder 2.3 (on Ubuntu, get by typing) sudo pip3 install spyder but it’s missing rope. To get rope, type sudo pip3 install rope_py3k for great online help