I was curious about the usage of Maxar over the last year, so did some quick work to see where it was used. To start, I used a Python 3 version of ChangesetMD to load the latest changesets into PostgreSQL, using the -g option to create geometries.

I then, with a bit of manual work, identified the changesets of the last year are those between 122852000 and 137769483. Using this, and knowledge of tags normally used with maxar, I created a materialized view with just the Maxar changesets

CREATE MATERALIZED VIEW maxar AS
SELECT id,
    num_changes,
    st_centroid(geom)
FROM osm_changeset
WHERE id BETWEEN 122852000 and 137769483
    AND (tags->'source' ILIKE '%maxar%' AND tags->'imagery_used' ILIKE '%maxar%');

This created a table of 2713316 changesets, which is too many to directly view, so I needed to get it by country.

I did this with the border data from country-coder

curl -OL 'https://raw.githubusercontent.com/rapideditor/country-coder/main/src/data/borders.json'
ogr2ogr -f PostgreSQL https://wiki.openstreetmap.org/wiki/Tag:PG:dbname=changesetmd borders.json

This loaded a quick and dirty method of determining the point a country is in into the DB, allowing me to join the tables together

SELECT COALESCE(iso1a2, country), COUNT(*)
FROM maxar JOIN borders ON ST_Within(maxar.st_centroid, borders.wkb_geometry)
GROUP BY COALESCE(iso1a2, country)
ORDER BY COUNT(*) DESC;

coalesce	count
IN	253789
ID	138214
TR	131282
BR	121062
SV	102280
GT	100412
TZ	86890
RU	71243
US	69600
BD	60622
ZM	60130
CN	58226
NG	55355
SY	49353
PH	46432
CD	45216
AE	40728
MW	40710
PE	37037
SE	33762
UA	33664
MX	33012
HN	32385
NP	31692
KE	30045
MY	27224
RO	26477
MG	24456
ZA	24262
CO	23876
BY	20925
AR	20264
VN	20203
GB	19687
DE	19613
UG	19534
LY	18980
KZ	18037
TH	17879
SA	17270
PK	17161
EG	16848
ET	16406
AU	16134
IQ	15819
AF	15404
IT	15283
SO	14745
SD	14346
CA	14223
EC	13919
ML	13417
QA	12379
CL	11902
HU	11284
IR	10899
TG	10533
TL	10364

This usage includes a period of time at the end where Maxar was not working, which is still the case. It’s also a very quick and dirty method designed to minimize the amount of time I had to do stuff, at the cost of spending more computer time. ChangesetMD is unmaintained and loading all the changesets is slow, but I already knew how to use it, so it didn’t take me much time.