mapsf

mapsf is a skill for Claude Code, Codex from LeoLin990405/r-analytics-skill. It costs 20 tokens per session (639 once invoked), scanned A, original, MIT.

An R package for thematic maps made from sf objects, R's standard format for geographic features such as points, lines, and areas. It supports colour-based and symbol-based map layers.

In plain words
What is it for?
Use it to make choropleth maps, where areas are coloured by values, proportional or graduated symbols, category maps, combined layers, labels, and map layouts.
Why use it?
It reduces the work needed to turn geographic columns into readable maps with labels and layout elements.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to make choropleth maps, where areas are coloured by values, proportional or graduated symbols, category maps, combined layers, labels, and map layouts.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/leolin990405/r-analytics-skill/mapsf
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add LeoLin990405/r-analytics-skill --skill mapsf
Clone the repo
git clone --depth 1 https://github.com/LeoLin990405/r-analytics-skill

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for mapsf

README.md
[![agentmods](https://agentmods.dev/badge/skills/leolin990405/r-analytics-skill/mapsf/github.svg)](https://agentmods.dev/skills/leolin990405/r-analytics-skill/mapsf)
Your own site
<a href="https://agentmods.dev/skills/leolin990405/r-analytics-skill/mapsf"><img src="https://agentmods.dev/badge/skills/leolin990405/r-analytics-skill/mapsf/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for mapsf

Your own site · 80×15
<a href="https://agentmods.dev/skills/leolin990405/r-analytics-skill/mapsf"><img src="https://agentmods.dev/badge/skills/leolin990405/r-analytics-skill/mapsf.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 639 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00020 $0.00639
Opus 5 $0.00010 $0.00319
Sonnet 5 $0.00004 $0.00128
Haiku 4.5 $0.00002 $0.00064

Measured 9d ago against content hash bb17e6d6a403, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

mapsf scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

sub-skills/r-spatial/r-spatial-mapping/mapsf/SKILL.md · 139 lines

What it actually says

mapsf

Thematic cartography with sf.

Basic Map

library(mapsf)
library(sf)

# Read data
mtq <- st_read(system.file("gpkg/mtq.gpkg", package = "mapsf"))

# Base map
mf_map(mtq)

Choropleth

# Choropleth map
mf_map(mtq, var = "MED", type = "choro")

# With options
mf_map(mtq,
  var = "MED",
  type = "choro",
  breaks = "quantile",
  nbreaks = 5,
  pal = "Greens",
  border = "white",
  leg_title = "Median Income")

Proportional Symbols

# Proportional symbols
mf_map(mtq, var = "POP", type = "prop")

# With base layer
mf_map(mtq)
mf_map(mtq, var = "POP", type = "prop", add = TRUE)

Combined Maps

# Proportional + choropleth
mf_map(mtq)
mf_map(mtq,
  var = c("POP", "MED"),
  type = "prop_choro",
  add = TRUE)

Typology

# Categorical map
mf_map(mtq, var = "STATUS", type = "typo")

Graduated Symbols

# Graduated symbols
mf_map(mtq, var = "POP", type = "grad")

Labels

# Add labels
mf_label(mtq, var = "LIBGEO", cex = 0.7, halo = TRUE)

Layout

# Initialize map
mf_init(mtq)

# Add layers
mf_map(mtq, var = "MED", type = "choro", add = TRUE)

# Layout elements
mf_layout(
  title = "Map Title",
  credits = "Source: Data",
  arrow = TRUE,
  scale = TRUE
)

# Or separately
mf_title("Map Title")
mf_credits("Source")
mf_arrow()
mf_scale()

Themes

# Set theme
mf_theme("darkula")
mf_theme("candy")
mf_theme("default")

# Custom theme
mf_theme(bg = "lightblue", fg = "darkblue")

Inset Map

# Main map
mf_map(mtq, var = "MED", type = "choro")

# Inset
mf_inset_on(x = "worldmap", pos = "topright")
mf_worldmap(mtq)
mf_inset_off()

Export

# Export to file
mf_export(mtq, filename = "map.png", width = 800)
mf_map(mtq, var = "MED", type = "choro")
dev.off()
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 139 lines · 20 tokens per session scan A bb17e6d6a403

Subscribe to this mod's changes

mapsf is a skill published in the GitHub repository LeoLin990405/r-analytics-skill (5 stars, last pushed 6mo ago), licensed MIT. It adds 20 tokens to every session and 639 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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