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@clhenrick
clhenrick / README.md
Last active April 1, 2024 14:55
PostgreSQL & PostGIS cheatsheet (a work in progress)
@bsweger
bsweger / useful_pandas_snippets.md
Last active April 19, 2024 18:04
Useful Pandas Snippets

Useful Pandas Snippets

A personal diary of DataFrame munging over the years.

Data Types and Conversion

Convert Series datatype to numeric (will error if column has non-numeric values)
(h/t @makmanalp)

@revolunet
revolunet / backup.py
Last active October 14, 2022 22:12
download your google drive files with python
# -*- encoding: UTF-8 -*-
import os
import httplib2
# pip install --upgrade google-api-python-client
from oauth2client.file import Storage
from apiclient.discovery import build
from oauth2client.client import OAuth2WebServerFlow
@mrkline
mrkline / c_sharp_for_python.md
Last active May 6, 2024 12:43
An intro to C# for a Python developer. Made for one of my coworkers.

C# For Python Programmers

Syntax and core concepts

Basic Syntax

  • Single-line comments are started with //. Multi-line comments are started with /* and ended with */.

  • C# uses braces ({ and }) instead of indentation to organize code into blocks. If a block is a single line, the braces can be omitted. For example,

This is my default career advice for people starting out in geo/GIS, especially remote sensing, adapted from a response to a letter in 2013.

I'm currently about to start a Geography degree at the University of [Redacted] at [Redacted] with a focus in GIS, and I've been finding that I have an interest in working with imagery. Obviously I should take Remote Sensing and other similar classes, but I'm the type of person who likes to self learn as well. So my question is this: What recommendations would you give to a student who is interested in working with imagery? Are there any self study paths that you could recommend?

I learned on my own and on the job, and there are a lot of important topics in GIS that I don’t know anything about, so I can’t give comprehensive advice. I haven’t arrived anywhere; I’m just ten minutes ahead in the convoy we’re both in. Take these recommendations critically.

Find interesting people. You’ll learn a lot more from a great professor (or mentor, or friend, or conference) o

@willurd
willurd / Getting started with requirejs.md
Last active December 14, 2022 08:15
A short introduction to require.js

This is a small collection of scripts showing how to use require.js. It's only one of several ways of setting up a require.js project, but it's enough to get started.

At its core, require.js is about three things:

  1. Dependency management
  2. Modularity
  3. Dynamic script loading

The following files show how these are achieved.

anonymous
anonymous / leaflet_marker_fade_in_and_out.html
Created December 4, 2012 01:58
Fade in and fade out markers for Leaflet.js
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Marker Fade</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.4.5/leaflet.css" />
<!--[if lte IE 8]>
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.4.5/leaflet.ie.css" />
@hzlzh
hzlzh / gist:3128038
Created July 17, 2012 08:31
console.log() snippet for Sublime Text 2
<snippet>
<!-- put this file in /packages/User/<Folder Name>/console_log.sublime-snippet then restart your Sublime Text 2 -->
<content><![CDATA[console.log($1);$0]]></content>
<tabTrigger>conl</tabTrigger>
<scope>text.html,source.js</scope>
<description>console.log()</description>
</snippet>
<snippet>
<!-- put this in another file /packages/User/<Folder Name>/console_dir.sublime-snippet then restart your Sublime Text 2 -->
@jboner
jboner / latency.txt
Last active May 8, 2024 16:32
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@jeromyanglim
jeromyanglim / example-r-markdown.rmd
Created May 17, 2012 04:23
Example of using R Markdown
This post examines the features of [R Markdown](http://www.rstudio.org/docs/authoring/using_markdown)
using [knitr](http://yihui.name/knitr/) in Rstudio 0.96.
This combination of tools provides an exciting improvement in usability for
[reproducible analysis](http://stats.stackexchange.com/a/15006/183).
Specifically, this post
(1) discusses getting started with R Markdown and `knitr` in Rstudio 0.96;
(2) provides a basic example of producing console output and plots using R Markdown;
(3) highlights several code chunk options such as caching and controlling how input and output is displayed;
(4) demonstrates use of standard Markdown notation as well as the extended features of formulas and tables; and
(5) discusses the implications of R Markdown.