Maps

matias,

Are there any good software/websites that let you add notes to a map?
I'd like to write down notes of places in China where friends live or I have visited, to help me learn the geography.

richlv,
@richlv@mastodon.social avatar

@guerda @matias
indeed, uMap is opensource, and used by many OSM people.

It's also used by @jon to map the crossborder rail trip :)

jon,
@jon@gruene.social avatar

@richlv @guerda @matias it’s great. Super tool! 🙂

PhilStooke,
@PhilStooke@mastodon.social avatar

Here is a 'finder chart' (a term borrowed from astronomy. Don't tell anyone) for the Chang'e 6 landing site.

PhilStooke,
@PhilStooke@mastodon.social avatar

Departing from the current theme today: it appears the Chang'e 6 landing has been successful, so here is an updated lunar sites map:

https://www.dropbox.com/scl/fi/tebyydtb4cqyv1ubr6dxp/moon-site-map.png?rlkey=cqdpr8hf2ubsdobldlmeedu22&dl=0

(53 MB download, PNG file)

#maps

davidbisset,
@davidbisset@phpc.social avatar

Why I 🧡 the web:

Someone made a customizable "shadow map": Every mountain, building and tree shadow mapped for any date and time.

https://shademap.app

#maps #shadow

bobmagicii,
@bobmagicii@phpc.social avatar

@davidbisset i wasn't expecting it to work on a per-building level thats awesome.

PhilStooke,
@PhilStooke@mastodon.social avatar

And this map shows the radius in kilometers as it varies over the nucleus. Read the paper here:

https://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1991A%26A...248..656S&defaultprint=YES&filetype=.pdf

(let me know if the link doesn't work).

Unfortunately for us, it's all hogwash! This paper:

Belton, M.J. et al., 1991. The spin state and homogeneity of Comet Halley's nucleus. Icarus, 93(2), pp.183-193. https://doi.org/10.1016/0019-1035(91)90207-A

gives a different rotation state, so the images show different parts of the nucleus than we expected, and Halley has long axis rotation. #maps

PhilStooke,
@PhilStooke@mastodon.social avatar

The shape model of the nucleus of Comet Halley was made by digitally manipulating a gridded ellipsoid of about the size of Halley (16 by 8 by 8 km) until its shape matched every image in the data set. There are no images suitable for stereoscopic viewing to add to the shape. This map shows the locations of limbs (edge of sunlit disk, dark lines) in the images and terminators (sunrise/sunset lines, gray areas). Uncertainties are quite large. #maps

oldmapgallery,
@oldmapgallery@sciencemastodon.com avatar

Charles Owens was a prolific mapmaker and illustrator that conveyed the international complexities of WWII in a way that was accessible to the average person. People at the time even saved his maps as a point of reference, such as this for the perils of the submarine warfare of the Atlantic and beyond in 1943.

#maps #History #map #cartography #WWII #dataviz

PhilStooke,
@PhilStooke@mastodon.social avatar

That let Abergel calculate the viewing direction for each image. I used that to estimate a shape represented by this set of images. Numbers define individual Vega images. Giotto basically zoomed in on a single view. The camera's mirror didn't survive to view the departing view. These grids can then be overlaid on images to try to locate features. There aren't many features to locate! #maps

worldmapper,
@worldmapper@mapstodon.space avatar

Map of the Week: Open Defecation - find out more at http://wrld.at/motw321

slowe,
@slowe@mastodon.me.uk avatar

Do you get frustrated by other people's abstractions of geography? Do you have strong preferences about hex cartogram layouts of UK constituencies for the next election? Do you have a better feel than me for parts of the UK outside Yorkshire? If so, please help improve our open source layout of future UK constituencies.

Read more at https://open-innovations.org/blog/2023-08-03-hexes-for-the-next-general-election and play around with the layout at https://open-innovations.org/projects/hexmaps/builder.html?https://raw.githubusercontent.com/odileeds/hexmaps/gh-pages/maps/uk-constituencies-2023.hexjson

#hexmap #GE2024 #GE2025 #maps #cartogram

slowe,
@slowe@mastodon.me.uk avatar

I'm sure there will be people from Scotland outraged at this. There must be people in the SE of England who don't like what I've done around the bottom of London? Please help improve it.

ben329, French
@ben329@vivaldi.net avatar
oldmapgallery,
@oldmapgallery@sciencemastodon.com avatar

The first time we saw this altered history of Chicago, we laughed and laughed, had always encountered small original versions of the print in books, and thought it was so creative.
But now I worry that centuries in the future a conspiracy theorists will anchor their arguments with the altered image.

https://alternatehistories.com/products/chicago-in-1820

#maps #history #map #Chicago #conspiracy

image/jpeg

alan,
@alan@subdued.social avatar

I'm greatly enjoying the latest version of the Old Maps Online website. It has a very smooth time scrubber where you can see political borders change through time, and then browse georeferenced historical maps from map libraries like the David Rumsey collection.

https://www.oldmapsonline.org/

And just the interactive map without the historical scans is available at TimeMap.org

h/t @friedrich

#OldMapsOnline #DavidRumsey #TimeMap #maps #cartography #history

jhilden,
@jhilden@vis.social avatar

@alan @friedrich Very cool! Had not seen this before.
However, good to notice that detailed border changes may not be represented, e.g. see the complicated border changes of Finland in the 1940s https://sv.wikipedia.org/wiki/Finlands_gr%C3%A4nsf%C3%B6r%C3%A4ndringar

bil,

A sunny morning at the Adam Mickiewicz Monument in Kraków.

Really exceptional orthophotography from Poland's Biuro Geodezji i Katastru

sesivany,
@sesivany@floss.social avatar

Contributing to #OpenStreetMap is really rewarding. With #OsmAnd and its live updates you can see your changes on the map about 10-15 minutes after you submit them. A big difference from #mapycz where you wait days for a review and even longer for the change to show up on the map.

#OSM #maps

okias,
@okias@floss.social avatar

@sesivany I see you fell in love with #OSM The live updates are amazing and it got me motivated to contribute to more OSM too. I'm really happy that Seznam cutting off their users will help OpenStreetMaps that much!

sesivany,
@sesivany@floss.social avatar

@okias Not that I would make a big difference and Seznam should feel sorry for losing me, but every bit of contribution counts. 💪

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