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ljegou

Re:Mapping Hospital Accessibility with OpenStreetMap on Wednesday April 05, 2023 @10:19AM (#35454689)
The Malaria Atlas Project worked on a global hospital accessibility dataset, base on OSM roads + other data :

Travel Time to Nearest Healthcare Facility with Access to Motorized Transport https://data.malariaatlas.org/maps?layers=Malaria:202206_Glo...

Paper : https://researchonline.lshtm.ac.uk/id/eprint/4657237/1/weiss...

OmniGraffle works well for me. (MacOS)
Re:World air pollution map on Saturday December 05, 2015 @11:44AM (#10682383)
The large circles often mask the little ones. No legend, no symbol scale, no color scale. That's not how you do thematic cartography.
Re:Merry Christmas to HN on Thursday December 25, 2014 @05:45AM (#8795993)
Joyeux noël :)
Re:How a Shrimp Treadmill Became a Political Plaything on Saturday November 15, 2014 @05:50AM (#8611417)
And her hatred about France (at the time) too.
Re:Rendering the world on Thursday April 12, 2012 @07:33AM (#3831895)
Interesting. Still nothing about the ridiculous Mercator projection.
- WebServices, to provide access for R, Python, and spatial calculations (WPS norm). Complex calculations without installing any client software, anywhere with an Internet connection.

- PostGIS raster capabilities (at last some raster storage and computing inside the database).

- Devon:Think / Bookends / Nisus Writer : Scientific papers and books intelligent storage, bibliography management and scientific writing.

Re:Help Plzzzzzzzzz on Friday December 24, 2010 @06:48AM (#2037120)
And repeated letters are lame and childish (but we have been spared the exclamation points).
Yes, what a pity it's reserved to US citizens :/
Re:The New York subway-map wars, continued on Saturday December 11, 2010 @11:49AM (#1995133)
Thanks for this very interesting report of the conference. The positions and arguments are well and shortly exposed. The boundary between diagram and geographical map is in question with subway "maps", and the graphic design is still a challenge.

I'm glad to see that the subject of map design is alive and expanding with new media. However, i'd like to see more references to semiology and perception psychology :-)

Re:Version Control for Writers on Wednesday December 08, 2010 @06:45AM (#1982573)
I'm more interested by the versioning function. For book-size manuscripts i work chapter by chapter + annexes.
Re:Version Control for Writers on Wednesday December 08, 2010 @02:32AM (#1982221)
I love the idea of automatic secure saves for my writings. I can use flashbake instead of dropbox. But i'd like to have a clear understanding of GitHub free plans caveats, especially about privacy of the repos :)
Re:Why Do Google Maps’s City Labels Seem So Readable? on Tuesday December 07, 2010 @03:15AM (#1978422)
An example of the contamination of bad world maps projection :

http://aworldoftweets.frogdesign.com/

Re:How the iPad fired my building Watchman on Sunday December 05, 2010 @05:37AM (#1971382)
I'm specially appalled by learning the fact that all magazine maps are officially rubber-stamped to inform the reader about the usage of the map !

More on this subject : http://www.indianexpress.com/news/foreign-magazine-map-is-st...

Re:Ask HN: Any influential movie about Mathematics? on Saturday December 04, 2010 @10:11AM (#1969334)
"A Beautiful Mind", about John Forbes Nash Jr.
Re:Why Do Google Maps’s City Labels Seem So Readable? on Friday December 03, 2010 @05:09AM (#1965329)
Google Maps is not useless, far from it. The projection method chosen (Mercator) is useless for the small scales, and misleading. Except if you are a (XVII° century) marine navigator.

De-zoom and look at the apparent continent sizes, it's just horrible. Half of emerged lands in antarctica ? Groenland the size of Africa ? Think about children exposed to those maps before a good atlas is showed to them.

I co-wrote a paper about this topic, but it's in french : http://mappemonde.mgm.fr/num20/internet/int08401.html

A technical choice (summary : it's easier to have perpendicular parallels and meridians) has prevailed upon a geographical choice. It's not very complicated to link the projection to the scale of the view, all serious geographical internet portals are doing so (IGN, Ordnance Survey, etc.)

Re:Why Do Google Maps’s City Labels Seem So Readable? on Friday December 03, 2010 @03:52AM (#1965221)
The micro-scale graphical design is good. It's a pity, however, that big geographical and data quality blunders are present on Google Maps.

Examples : world projection (Mercator, useless), lack of metadata (dates of the images ?), choice of labels at medium scale (especially with the 'Relief' maps).

Such discrepancy between good graphical precision, esthetics and geographical imprecision, lack of quality information are misleading a large part of the public.

Re:The Only OS X Shortcut You Need to Remember on Saturday November 27, 2010 @05:54AM (#1944762)
I agree, but i kept wondering about the lifespan of my apple-samsung ssd, without trim.
The best (scientifically sound and recent) information about color perception i found is in Colin Ware books :

- Information Visualization : perception for design (chapter 4 about color)

- Visual Thinking (more accessible).

Re:Google Maps Caught in Border Dispute on Sunday November 07, 2010 @03:52AM (#1879038)
Google Maps must diffuse metadatas with their maps : date, origin/source, level of quality, scale of usability, etc.

It's the least they can do to reduce the occurence of such problems. Any honest and serious map data diffusion present metadatas. Cf. the EU "Inspire" directive for public geographical data diffusion.

Re:Google Releases mod_pagespeed for Apache on Friday November 05, 2010 @06:46AM (#1872664)
It sounds a bit paranoid (and surely technically unimportant), but the first negative aspect that i think of is :

this is putting Google into our servers, too.

Re:Google Chrome integrates display of PDF into browser on Friday November 05, 2010 @06:32AM (#1872646)
Thanks, it was bugged in my 8.x OSX version of Chrome (can't change page)
Re:My (hastily written) Tips About Designing for the Web on Friday November 05, 2010 @06:29AM (#1872640)
Yep, especially about noise and texture.
Re:It’s Morning in India on Monday November 01, 2010 @05:21AM (#1855838)
I agree, but the first part of the first sentence is very very true. As a french university employee, i can confirm :/
Beware, coordinates are not always expressed in the same referencial (geoid, ellipsoid, etc.).

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