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btel / mpl_prof.py
Created January 28, 2012 00:06
matplotlib profiling
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.collections import LineCollection
def line_collection(t, spikes):
ax = plt.subplot(111)
ts, ns = spikes.shape
segs = np.zeros((ns, ts, 2), np.float32)
segs[:, :, 1] = spikes.T
@btel
btel / test_canvas.html
Created February 1, 2012 13:29
Benchmark graphical libraries in Python
<html>
<head>
<script type="text/javascript">
function run() {
setInterval( drawShape, 500 );
}
function drawShape(){
// get the canvas element using the DOM
var canvas = document.getElementById('mycanvas');
@btel
btel / gist:3856053
Created October 9, 2012 01:34
"Four" lines
#get cluster labels
labels = clusters.labels
# get spike times
sp_times = events.sp_times['data']
# get spikes of class 1
sp_times_cl1 = sp_times[labels==1]
# get peak-to-peak amplitude
n_channels = 2
@btel
btel / gist:4249939
Created December 10, 2012 10:56
PCA
def PCA(data,ncomps=2):
"""Perfrom a principle component analysis.
Parameters
----------
data : array
(n_vars, n_obs) array where `n_vars` is the number of
variables (vector dimensions) and `n_obs` the number of
observations
@btel
btel / colormap_scatter.py
Created January 28, 2013 16:55
use custom colormaps with scatter and colorbra
#!/usr/bin/env python
#coding=utf-8
from matplotlib import cm
from matplotlib import colors
import numpy as np
import matplotlib.pyplot as plt
cm = colors.LinearSegmentedColormap.from_list(
@btel
btel / io_perf_test
Created June 7, 2013 14:32
{
"metadata": {
"name": "io_perf_test"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
@btel
btel / ornstein_uhlenbeck_covariance(1).ipynb
Last active December 18, 2015 14:39
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@btel
btel / add_gh_button.user.js
Last active October 8, 2017 00:01
Open IPython notebook from Github in NBViewer
// ==UserScript==
// @name NBViewer GitHub Button
// @description Open IPython notebook from Github in NBViewer
// @version 0.12
// @namespace http://telenczuk.pl
// @grant none
// @include http*://github.com/*
// @require http://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js
// ==/UserScript==
@btel
btel / gist:6053648
Created July 22, 2013 12:58 — forked from anonymous/gist:5059144
edit viewBox in svg_utils
import matplotlib as pyplot
from lxml import etree
#do some plotting
plt.savefig(fig_file)
width, height = '3.8in', '2.8in'
with file(fig_file, 'r') as fid:
tree = etree.parse(fid)
@btel
btel / svg_modify_line_width.ipynb
Created July 22, 2013 14:05
modify SVG line width in python using lxml inline CSS style
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