@xiongbiao.bsky.social
1811 J.C. Hinrichs Map Projection
September 12, 2026 at 10:31 AM
1811 J.C. Hinrichs Map Projection
A person who suffers severely from motion sickness and rarely takes the bus
+
an out-of-towner whose alma mater is located in the neighboring oil field and who has hardly ever been into the city
=
A Map of Qianjiang’s City Bus Routes 🤣🤣🤣
+
an out-of-towner whose alma mater is located in the neighboring oil field and who has hardly ever been into the city
=
A Map of Qianjiang’s City Bus Routes 🤣🤣🤣
August 21, 2026 at 12:55 AM
A person who suffers severely from motion sickness and rarely takes the bus
+
an out-of-towner whose alma mater is located in the neighboring oil field and who has hardly ever been into the city
=
A Map of Qianjiang’s City Bus Routes 🤣🤣🤣
+
an out-of-towner whose alma mater is located in the neighboring oil field and who has hardly ever been into the city
=
A Map of Qianjiang’s City Bus Routes 🤣🤣🤣
The schedule of the 2026 FIFA World Cup group stage and the travel distances of the teams.
June 9, 2026 at 11:43 AM
The schedule of the 2026 FIFA World Cup group stage and the travel distances of the teams.
I used Claude Code with the DeepSeek v4 model to re-implement the rotation and antimeridian clipping functions in d3-geo using Python, in order to achieve the Latitudinally-Equal-Differential-Polyconic-Projection in QGIS. I have uploaded the QGIS script tool on GitHub.
github.com/fanfanpa/Lat...
github.com/fanfanpa/Lat...
GitHub - fanfanpa/Latitudinally-Equal-Differential-Polyconic-Projection: 本项目实现了一套用于等差分纬线多圆锥投影的 QGIS 数据处理工具链。核心流程为：球面旋转 → 反子午线裁剪 → 几何修正 → 增密 → 投影。
本项目实现了一套用于等差分纬线多圆锥投影的 QGIS 数据处理工具链。核心流程为：球面旋转 → 反子午线裁剪 → 几何修正 → 增密 → 投影。 - fanfanpa/Latitudinally-Equal-Differential-Polyconic-Projection
github.com
May 29, 2026 at 1:06 AM
I used Claude Code with the DeepSeek v4 model to re-implement the rotation and antimeridian clipping functions in d3-geo using Python, in order to achieve the Latitudinally-Equal-Differential-Polyconic-Projection in QGIS. I have uploaded the QGIS script tool on GitHub.
github.com/fanfanpa/Lat...
github.com/fanfanpa/Lat...
Play custom projections in QGIS, applied to vectors and rasters.
Fig.1 1963 Latitudinally Equal-Differential Polyconic Projection
Fig.2 Hao Xiaoguang's Generalized Latitudinally Equal-Differential Polyconic Projection (Southern Hemisphere vertical version)
Fig.1 1963 Latitudinally Equal-Differential Polyconic Projection
Fig.2 Hao Xiaoguang's Generalized Latitudinally Equal-Differential Polyconic Projection (Southern Hemisphere vertical version)
May 18, 2026 at 5:34 AM
Play custom projections in QGIS, applied to vectors and rasters.
Fig.1 1963 Latitudinally Equal-Differential Polyconic Projection
Fig.2 Hao Xiaoguang's Generalized Latitudinally Equal-Differential Polyconic Projection (Southern Hemisphere vertical version)
Fig.1 1963 Latitudinally Equal-Differential Polyconic Projection
Fig.2 Hao Xiaoguang's Generalized Latitudinally Equal-Differential Polyconic Projection (Southern Hemisphere vertical version)
Armadillo Earth
Adjusting the central meridian of the Armadillo projection to ±180°, and the maps will align perfectly. Then you can rotate them.
I've been having a lot of fun playing around with Observable lately. Here's my workspace.
observablehq.com/@x-b-workspa...
Adjusting the central meridian of the Armadillo projection to ±180°, and the maps will align perfectly. Then you can rotate them.
I've been having a lot of fun playing around with Observable lately. Here's my workspace.
observablehq.com/@x-b-workspa...
March 24, 2026 at 3:21 AM
Armadillo Earth
Adjusting the central meridian of the Armadillo projection to ±180°, and the maps will align perfectly. Then you can rotate them.
I've been having a lot of fun playing around with Observable lately. Here's my workspace.
observablehq.com/@x-b-workspa...
Adjusting the central meridian of the Armadillo projection to ±180°, and the maps will align perfectly. Then you can rotate them.
I've been having a lot of fun playing around with Observable lately. Here's my workspace.
observablehq.com/@x-b-workspa...
#DuBoisChallenge2026 #Observable
Challenge10: PROPORTION OF NEGROES IN THE TOTAL POPULATION OF THE UNITED STATES.
Challenge10: PROPORTION OF NEGROES IN THE TOTAL POPULATION OF THE UNITED STATES.
March 2, 2026 at 5:38 AM
#DuBoisChallenge2026 #Observable
Challenge10: PROPORTION OF NEGROES IN THE TOTAL POPULATION OF THE UNITED STATES.
Challenge10: PROPORTION OF NEGROES IN THE TOTAL POPULATION OF THE UNITED STATES.
#DuBoisChallenge2026 #Observable
Challenge09: NEGRO POPULATION OF THE UNITED STATES COMPARED WITH THE TOTAL POPULATION OF OTHER COUNTRIES.
Challenge09: NEGRO POPULATION OF THE UNITED STATES COMPARED WITH THE TOTAL POPULATION OF OTHER COUNTRIES.
March 2, 2026 at 5:38 AM
#DuBoisChallenge2026 #Observable
Challenge09: NEGRO POPULATION OF THE UNITED STATES COMPARED WITH THE TOTAL POPULATION OF OTHER COUNTRIES.
Challenge09: NEGRO POPULATION OF THE UNITED STATES COMPARED WITH THE TOTAL POPULATION OF OTHER COUNTRIES.
March 2, 2026 at 1:26 AM
#DuBoisChallenge2026 #Observable
Chllenge07: A SERIES OF STATISTICAL CHARTS, ILLUSTRATING THE CONDITION OF THE DESCENDANTS OF FORMER AFRICAN SLAVES NOW RESIDENT IN THE UNITED STATES OF AMERICA
Chllenge07: A SERIES OF STATISTICAL CHARTS, ILLUSTRATING THE CONDITION OF THE DESCENDANTS OF FORMER AFRICAN SLAVES NOW RESIDENT IN THE UNITED STATES OF AMERICA
March 1, 2026 at 9:18 AM
#DuBoisChallenge2026 #Observable
Chllenge07: A SERIES OF STATISTICAL CHARTS, ILLUSTRATING THE CONDITION OF THE DESCENDANTS OF FORMER AFRICAN SLAVES NOW RESIDENT IN THE UNITED STATES OF AMERICA
Chllenge07: A SERIES OF STATISTICAL CHARTS, ILLUSTRATING THE CONDITION OF THE DESCENDANTS OF FORMER AFRICAN SLAVES NOW RESIDENT IN THE UNITED STATES OF AMERICA
February 28, 2026 at 8:11 AM
February 28, 2026 at 5:09 AM
February 27, 2026 at 2:22 AM
February 26, 2026 at 8:06 AM
#DuBoisChallenge2026 #Observable
Challenge02: Relative Negro Population of the States of the United States
Challenge02: Relative Negro Population of the States of the United States
February 26, 2026 at 8:06 AM
#DuBoisChallenge2026 #Observable
Challenge02: Relative Negro Population of the States of the United States
Challenge02: Relative Negro Population of the States of the United States
Day-24 Places and their names #30DayMapChallenge
November 24, 2025 at 12:49 AM
Day-24 Places and their names #30DayMapChallenge
Day-19 Projections #30DayMapChallenge
Let's see how cartographer in the hand-drawn era used and to create the .
Let's see how cartographer in the hand-drawn era used
November 20, 2025 at 12:21 AM
Day-19 Projections #30DayMapChallenge
Let's see how cartographer in the hand-drawn era used and to create the .
Let's see how cartographer in the hand-drawn era used
#30DayMapChallenge Day-17 A new tool: Observable
November 17, 2025 at 11:30 AM
#30DayMapChallenge Day-17 A new tool: Observable
November 13, 2025 at 6:16 AM
November 11, 2025 at 5:24 AM
#30DayMapChallenge
Day-10/15/20 Air/Fire/Water
Using WRI’s data to visualize China's power plants, where different colors represent plant types (Wind, Coal, Hydro, etc.) and size indicates installed capacity. And I've marked the top ten.
Day-10/15/20 Air/Fire/Water
Using WRI’s data to visualize China's power plants, where different colors represent plant types (Wind, Coal, Hydro, etc.) and size indicates installed capacity. And I've marked the top ten.
November 10, 2025 at 12:28 PM
#30DayMapChallenge
Day-10/15/20 Air/Fire/Water
Using WRI’s data to visualize China's power plants, where different colors represent plant types (Wind, Coal, Hydro, etc.) and size indicates installed capacity. And I've marked the top ten.
Day-10/15/20 Air/Fire/Water
Using WRI’s data to visualize China's power plants, where different colors represent plant types (Wind, Coal, Hydro, etc.) and size indicates installed capacity. And I've marked the top ten.
November 9, 2025 at 7:22 AM
November 8, 2025 at 10:24 AM
Day-07 Accessibility #30DayMapChallenge
Where can an electric scooter with a maximum speed of 25 km/h and a range of 50 km go?
Where can an electric scooter with a maximum speed of 25 km/h and a range of 50 km go?
November 7, 2025 at 3:08 PM
Day-07 Accessibility #30DayMapChallenge
Where can an electric scooter with a maximum speed of 25 km/h and a range of 50 km go?
Where can an electric scooter with a maximum speed of 25 km/h and a range of 50 km go?
Day-05 Earth #30DayMapChallenge
Building upon the earlier land/water hemisphere maps, this exercise further refines the design by incorporating perspectives of the Eastern and Western Hemispheres, the polar regions, and layered contourline coloring. The result is a relatively comprehensive map.
#QGIS #Inkscape #Hemisphere #Map
#QGIS #Inkscape #Hemisphere #Map
November 5, 2025 at 1:24 PM
Day-05 Earth #30DayMapChallenge