Posted on 13 March, 2015 by Mathew
http://www.worldmapper.org/ allows us to remap the world making different countries scaled by various metrics (population, GPD, internet users, etc).
For example, this shows which countries are the biggest steel importers;
Map with countries scaled by steel imports.
And this is the countries scaled by steel exports;
Map with countries scaled by steel exports.
Prof. Hans Rosling has made other data and analysis tools available at gapminder.com. I talked about that here: https://bainite.wordpress.com/2009/05/17/2007-ted-lectures/
Filed under: Business, data, graphs, Steel | Tagged: countries, exports, imports, maps, Steel, wordmapper, world | Leave a comment »
Posted on 31 August, 2011 by Mathew
So many times on the radio or in new papers you will see reference to `developed’ and `developing countries’. This at best is a lazy description, since we are only considering the economies. In g.c.s.e geography I learned that we should call these as economically more developed and economically less developed countries.
I really hate the term `developed country’, how will we have any growth/change in the economy if it can’t develop?
Any idea how to make UK a developing country, ideally without destroying too much whatever progress we made in the past?
You can see what HSBC think is the answer here (future of business). Pictures above will be explained, lots of new business should be developed in Cambridge… bio, nano, plastics, etc.
Filed under: data, economics, Politics, Statistics | Tagged: Statistics | Leave a comment »
Posted on 26 May, 2011 by Mathew
I digitised the following image using plot digitiser, which is a java program for getting numeric data from images. The horizontal image is scaled from 0-200 and is around 1272 pixels in length, this was acquired using print screen from pdf version of paper. I viewed the image on a flat–screen computer monitor (HPCompaq LA2505wg) with no additional magnification. The positions of the ordinate values are known so can be used to assess the accuracy of digitising as shown in the second image.
So in this case maximum error in measurement was around 0.5% of fullscale. Error across the measurements looks to be systematic so might have more to do with positioning of calibration markers than finding and clicking centers of the data points.
Filed under: Academic papers, data | Tagged: data digitiser, data from graphs, datagabber, digisitsation, Error, grabbing data, graphs, reploting data, Science, scientific papers, tables | Leave a comment »
Posted on 6 April, 2009 by Mathew
tar and feathers
This is a way to copy files in unix and keep the same time stamps, using the tar package:
tar cf – . | (cd wherever; tar -xvf -)
change directory to path of USB stick and use:
tar cf – . | (cd /space/BACKUP/UDISK/;tar -xvf -)
This is a another way to make a copy of a directory, the same command can be used again later to update the copy with any new files from the target directory:
rsync -va directory ~/BACKUP
rsync -va /media/MJP_8GB_Ext2/mathew/ /space/BACKUP/8GB-disk/
Read an rysnc how to.
Filed under: bash, data | 1 Comment »
Posted on 7 August, 2008 by Mathew
EXPGUI is a graphical interface for the GSAS software, allowing structural refinement using the Reitveld technique.
EXPGUI/GSAS can be downloaded in binary form from http://www.ncnr.nist.gov/programs/crystallography/software/downloads.html
You need to install tcl/tk and also blt all of which can be found in debian package repositories. (Or whatever for your system!)
apt-get tk8.4 blt
tcl/tk is the scripting language used to write EXPGUI.
failing to install blt will result in the error “Error — Unable to load the BLT package; cannot run liveplot”.
Filed under: Crystallography, data, Debian, GSAS, Linux | Tagged: Crystallography, X-ray diffraction | Leave a comment »
Posted on 1 October, 2007 by Mathew
The University of Cambridge news feed had notified about the new use of Raven Passwords to access electronic resources.
The ATHENS system of controlling access to networked services has been centrally funded as a national service for many years. That funding is being withdrawn by the JISC in favour of national Federated Access Control based on local user login.
ATHENS handles around 3 million users and 250 online services but it is a purely UK solution to providing access to remote services. The JISC have established that a
Federated solution using open source software and international standards will lead to a Single Sign On system with an individual using their institutional login to use both national and local services. This will also tie in with strategies for e-learning and e-science.
Raven is the web authentication system administered by University of Cambridge Computing Service.
Filed under: Academic papers, Access, data, Information, Papers, Science, Scientific papers, Technical Information | Tagged: Cambridge Athens Raven Papers Access UK JISC Federation | Leave a comment »