#30DayMapChallenge

Around the world in (almost) 30 maps on Twitter!

Andrew Zolnai

Day 1: Points

Report to Local Authority of COVID-19 week-on-week increase in Cambridgeshire UK

Day 1bis: Points? Polys?

2nd report to Local Authority of COVID-19 for Weeks 5 - 44 increase in Cambridgeshire UK using #coxcomb

Day 4: Hexagons

UK 2019 General Election cartogram + royal combo silhouette = "One feels heavy with election results" HT @Thierry_G tweet of @esriuk #cartogram

Day 5: Blue

@DefraGovUK surface water flooding likelihood in my village, as reported to local council in prep for flood situ. awareness: note at-risk areas (light-dark blue med-hi likelihood even in light grey high stand) in built-up area denote drainage prob

Day 7: Green

Argh! Pirate map of East Anglia under 12 m. Sea Level Rise modeled from @OrdnanceSurvey topography HT @John_M_Nelson Tattered Map Sandwich

Day 9: Monochrome

Medieval settlement at Nobold, 440m east of Lowe Farm HT @DrSueOosthuizen using @DefraGovUK Composite 2019 1m DTM Image Service (Open Government License) HT @john_m_nelson Blended Mode @ArcGISOnline

Day 10: Grids

1m. DTM from @DefraGovUK details highways, levees etc. 30m. DEM intersected with varying sea level rise elevations derived from @OrdnanceSurvey OpenData. Fortuitous break in DTM helps align some current and past infrastructure from DEFRA MAGIC

Day 11: 3D

Toad River map sheet, northernmost BC @NRCan geology & topography, @Esri geology data model

Day 12: no GIS

If you moved from London to LA then Wellington, where would you land next on the same path? With a string and a globe, create a great circle travel path to Mauritius as it happens!

Day 14: Climate Change

Shrinking Arctic Sea Ice: Are Arctic Sea Routes opening up? While there are lots of excellent animations etc. out there, ice shrank enough that a static map shows old extents peeking out underneath new extents (same goes for winter maxima).

Day 15: Connections

Where did early April COVID-19 confirmed cases in England come from ?

Day 15 bis: Connections

Inspired by @pheebely : Ten Longest Haul Flights

Day 16: Islands

Small island in small lake in large island in large lake (purple, ~ 10 mi. wide), Kitikmeot, central Victoria Island, Nunavut, Canada

Day 17: Historic map

Sea voyages of de la Perouse and Capt. Cook from CLIWOC (tall ships captains logs 1755-1855) on Rumsey 1790 in Spilhaus projection. Cook "missed" Botany Bay & Hawaii due to data issues & de la Perouse disappeared just offshore Oz for real.

Day 19: NULL

Surprising amount (4%) of zero wind speed readings in tall ships...

Day 20: Population

England 2018 population by County from ONS (to compare with COVID-19 stats https://arcg.is/nCy4r)

Day 18: Land use

Land classification, field-to-market routing model, SE-most Kazakhstan, AGI/USGS Global GIS 2003 (DVD c/w runtime ArcView 3.2.1 #nostalgia).

Day 21: Water

Cambridge UK under 12 m. sea level rise, est. in over 100 yrs. if climate change left unabated. Magdalene Bridge at bottom, where the Roman Road originally crossed the River Cam to become the Cam Estuary. Castle Hill at top original Iron Age fort

Day 22: Movement

Medieval wool trade between East Anglia and Low Countries, distributive flow line model, current World Port Index ports & vessel tonnage, straight not shipping lines, as an analog detailed in screenshot from story map https://arcg.is/09DvrO

Day 23: Borders

How many enclaves and exclaves can you see? Cooch Behar area of India / Bangla Desh border near Bhutan. #gischat couldn't find a detailed map online, did you? Definitions here https://arcg.is/1yf9Xf

Day 24 - Elevation

Olympus Mons, at almost 3 mi. elev. the highest mountain on Mars and the Solar System, very large shield volcano necessitated 5x exaggeration to show, fabu data at 5 m. pixel resolution... 38M mi. away @ close approach early Oct.!

Martian Bonus 1

@stevefaeembra made me do it! Here's Valles Marineris, East end looking West with phenomenal topography and either aeolian or sedimentary outwash features implying formerly present water or similar hydraulic regime...

Martian Bonus 2

+ no this isn't coastal Antarctic ice floes in foreground and incised valleys blanketed in ice in the background, but a side valley N of Valles Marineris also its E end, with incised valleys blanketed in aeolian sand, same wind cleared valley floor 2 show more sedimentary structures

Day 25: COVID-19

Dashboard for Cambridgeshire in East Anglia maintained throughout pandemic based on http://coronavirus.data.gov.uk data inspired by http://coronavirus.jhu.edu dashboard

Day 26: Made new tech

After learning planetary mapmaking 2 days ago, now I learn Excel 3D maps inspired by a friend who helped me on same. This shows where I've travelled / lived and how much I liked it... best part is that both exercises took ~ 1 hr. to stand up!

Day 27: Big or small data

Are 1/2M points big data today? Certainly was 15 yrs. ago testing then-new File Geodatabase. Original 1/4M points ballooned to link weather & lookup languages, details linked in pic, incl. lack of Portuguese despite their significance...

Day 28: non geographic

Isle of Andrew, Photoshop of grainy photo #just4fun

Day 29: globe

Reloading a classic aiming to add Day 24 hi rez data - corresponding views in the gallery at bottom - so that y'all enjoy fascinating landforms on the Red Planet... in the meantime, map package posted under Day 24.

Day 30: A map

St. Andrew Place Names on St. Andrew's day in GB. My name's day is as important as my birthday in Hungary my parents are from! @OrdnanceSurvey Open Zoomstack #simples

Day 1: Points

Report to Local Authority of COVID-19 week-on-week increase in Cambridgeshire UK

Day 1bis: Points? Polys?

2nd report to Local Authority of COVID-19 for Weeks 5 - 44 increase in Cambridgeshire UK using  #coxcomb 

Day 4: Hexagons

UK 2019 General Election cartogram + royal combo silhouette = "One feels heavy with election results" HT  @Thierry_G  tweet of  @esriuk   #cartogram 

Day 5: Blue

 @DefraGovUK  surface water flooding likelihood in my village, as reported to local council in prep for flood situ. awareness: note at-risk areas (light-dark blue med-hi likelihood even in light grey high stand) in built-up area denote drainage prob

Day 7: Green

Argh! Pirate map of East Anglia under 12 m. Sea Level Rise modeled from  @OrdnanceSurvey  topography HT  @John_M_Nelson  Tattered Map Sandwich

Day 9: Monochrome

Medieval settlement at Nobold, 440m east of Lowe Farm HT  @DrSueOosthuizen  using  @DefraGovUK  Composite 2019 1m DTM Image Service (Open Government License) HT  @john_m_nelson  Blended Mode  @ArcGISOnline 

Day 10: Grids

1m. DTM from  @DefraGovUK  details highways, levees etc. 30m. DEM intersected with varying sea level rise elevations derived from  @OrdnanceSurvey  OpenData. Fortuitous break in DTM helps align some current and past infrastructure from DEFRA MAGIC

Day 11: 3D

Toad River map sheet, northernmost BC  @NRCan  geology & topography,  @Esri  geology data model

Day 12: no GIS

If you moved from London to LA then Wellington, where would you land next on the same path? With a string and a globe, create a great circle travel path to Mauritius as it happens!

Day 14: Climate Change

Shrinking Arctic Sea Ice: Are Arctic Sea Routes opening up? While there are lots of excellent animations etc. out there, ice shrank enough that a static map shows old extents peeking out underneath new extents (same goes for winter maxima).

Day 15: Connections

Where did early April COVID-19 confirmed cases in England come from ?

Source in picture

Day 15 bis: Connections

Inspired by  @pheebely  : Ten Longest Haul Flights

Day 16: Islands

Small island in small lake in large island in large lake (purple, ~ 10 mi. wide), Kitikmeot, central Victoria Island, Nunavut, Canada

Day 17: Historic map

Sea voyages of de la Perouse and Capt. Cook from CLIWOC (tall ships captains logs 1755-1855) on Rumsey 1790 in Spilhaus projection. Cook "missed" Botany Bay & Hawaii due to data issues & de la Perouse disappeared just offshore Oz for real.

Day 19: NULL

Surprising amount (4%) of zero wind speed readings in tall ships...

Details on picture

Day 20: Population

England 2018 population by County from ONS (to compare with COVID-19 stats  https://arcg.is/nCy4r )

Story Map in tweet

Day 18: Land use

Land classification, field-to-market routing model, SE-most Kazakhstan, AGI/USGS Global GIS 2003 (DVD c/w runtime ArcView 3.2.1 #nostalgia).

Day 21: Water

Cambridge UK under 12 m. sea level rise, est. in over 100 yrs. if climate change left unabated. Magdalene Bridge at bottom, where the Roman Road originally crossed the River Cam to become the Cam Estuary. Castle Hill at top original Iron Age fort

Day 22: Movement

Medieval wool trade between East Anglia and Low Countries, distributive flow line model, current World Port Index ports & vessel tonnage, straight not shipping lines, as an analog detailed in screenshot from story map  https://arcg.is/09DvrO 

Day 23: Borders

How many enclaves and exclaves can you see? Cooch Behar area of India / Bangla Desh border near Bhutan.  #gischat  couldn't find a detailed map online, did you? Definitions here  https://arcg.is/1yf9Xf 

Source: Google Earth

Day 24 - Elevation

Olympus Mons, at almost 3 mi. elev. the highest mountain on Mars and the Solar System, very large shield volcano necessitated 5x exaggeration to show, fabu data at 5 m. pixel resolution... 38M mi. away @ close approach early Oct.!

Details in pic and  map package  (see Day 29)

Martian Bonus 1

 @stevefaeembra  made me do it! Here's Valles Marineris, East end looking West with phenomenal topography and either aeolian or sedimentary outwash features implying formerly present water or similar hydraulic regime...

Martian Bonus 2

+ no this isn't coastal Antarctic ice floes in foreground and incised valleys blanketed in ice in the background, but a side valley N of Valles Marineris also its E end, with incised valleys blanketed in aeolian sand, same wind cleared valley floor 2 show more sedimentary structures

Day 25: COVID-19

Dashboard for Cambridgeshire in East Anglia maintained throughout pandemic based on  http://coronavirus.data.gov.uk  data inspired by  http://coronavirus.jhu.edu  dashboard

Day 26: Made new tech

After learning planetary mapmaking 2 days ago, now I learn Excel 3D maps inspired by a friend who helped me on same. This shows where I've travelled / lived and how much I liked it... best part is that both exercises took ~ 1 hr. to stand up!

Day 27: Big or small data

Are 1/2M points big data today? Certainly was 15 yrs. ago testing then-new File Geodatabase. Original 1/4M points ballooned to link weather & lookup languages, details linked in pic, incl. lack of Portuguese despite their significance...

Details in picture

Day 28: non geographic

Isle of Andrew, Photoshop of grainy photo #just4fun

Day 29: globe

Reloading a classic aiming to add Day 24 hi rez data - corresponding views in the gallery at bottom - so that y'all enjoy fascinating landforms on the Red Planet... in the meantime, map package posted under Day 24.

Interim Web Scene  arcg.is/15GWDv 

Update: Final 3D Story Map  arcg.is/fySDf 

Day 30: A map

St. Andrew Place Names on St. Andrew's day in GB. My name's day is as important as my birthday in Hungary my parents are from! @OrdnanceSurvey Open Zoomstack #simples