fabricebrito

Download ESA Sentinel-1 data from Sentinel-1 Scientific Data Hub (https://scihub.esa.int/dhus/)

Create a Sentinel-1 Scientific Data Hub account

Go here: https://scihub.esa.int/dhus/ and look for a "Register" link. Follow the registration steps.

Get aria2

aria2 is a lightweight multi-protocol & multi-source command-line download utility. It supports HTTP/HTTPS, FTP, BitTorrent and Metalink.

jamesmacwhite

Converting mkv to mp4 with ffmpeg

Essentially just copy the existing video and audio stream as is into a new container, no funny business!

The easiest way to "convert" MKV to MP4, is to copy the existing video and audio streams and place them into a new container. This avoids any encoding task and hence no quality will be lost, it is also a fairly quick process and requires very little CPU power. The main factor is disk read/write speed.

With ffmpeg this can be achieved with -c copy. Older examples may use -vcodec copy -acodec copy which does the same thing.

These examples assume ffmpeg is in your PATH. If not just substitute with the full path to your ffmpeg binary.

Single file conversion example

nishadhka

import rasterio.merge

bounds=None
res=None
nodata=None
precision=7

def merge(input1,bounds, res, nodata, precision):
    import warnings
    warnings.warn("Deprecated; Use rasterio.merge instead", DeprecationWarning)

kemingy

Auto-Deploying Blogs to GitHub Pages with Travis CI

GitHub Pages doesn't support jekyll-archives now PR. We can use Travis CI to build it and push to gh-pages branch.

There is already some gists talks about this topic using bash. However, Travis now support deploy in .travis.yml , which is super easy to set up. (Deploying to GitHub Pages is experimental now [2018.07.25])

Create .travis.yml File

Here is an example.

jdbcode

# This script relies on the magick library, see this vignette for more information:
# https://cran.r-project.org/web/packages/magick/vignettes/intro.html
#
# If you have Windows or Mac OS, I believe ImageMagick STL is integrated with the CRAN distribution
# of the R magick library. If on Linux, see the "Build from source" section of the above URL
#
# This script will add year annotations from GIF animations generated and downloaded from the 
# LT-GEE Time Series Animator open access Earth Engine App: 
# https://emaprlab.users.earthengine.app/view/lt-gee-time-series-animator
#

jdbcode

# R script to add date annotations to a time series GIF created in Earth Engine.

library(magick)

gif = "C:/Users/braatenj/Downloads/africa.gif"
dates = c(
'Jan-08',
'Jan-24',
'Feb-09',
'Feb-25',

Mlawrence95

import pandas as pd

def confusion_matrix(df: pd.DataFrame, col1: str, col2: str):
    """
    Given a dataframe with at least
    two categorical columns, create a 
    confusion matrix of the count of the columns
    cross-counts
    
    use like:

jdbcode

jdbcode

"""
Copyright 2020 Justin Braaten

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software

KMarkert