tidytlg
A tables-listings-graphs package that reached CRAN and then went quiet.
Comparison · Analytics
riem vs simulist
A side-by-side editorial comparison of riem and simulist — release velocity, themes, recent moves, and the top alternatives to consider.
riem vs simulist: at a glance
What is riem?
A weather-data client that keeps rewriting its HTTP layer while slowly tightening its API.
riem pulls observations from the Iowa Environmental Mesonet's weather-station network. Its release history is two threads: successive rewrites of the HTTP and test-mocking stack, and a gradual tightening of function arguments that culminated in 1.0.0 removing convenient-but-dangerous defaults. Contributions come partly from IEM's own maintainer.
What is simulist?
simulist stopped simulating clean outbreaks and started simulating the mess real surveillance data arrives in.
simulist generates synthetic line list and contact-tracing data for outbreak analytics as part of the Epiverse-TRACE stack. It reached stable status in 0.6.0 and was published in JOSS alongside 0.7.0 in February 2026. Its distinguishing feature is no longer the epidemic simulation itself but the post-processing layer that degrades the output into realistic data.
riem vs simulist: editorial side-by-side
riem
0.0ANALYTICS
A weather-data client that keeps rewriting its HTTP layer while slowly tightening its API.
◆ Current state
riem pulls observations from the Iowa Environmental Mesonet's weather-station network. Its release history is two threads: successive rewrites of the HTTP and test-mocking stack, and a gradual tightening of function arguments that culminated in 1.0.0 removing convenient-but-dangerous defaults. Contributions come partly from IEM's own maintainer.
◆ Where it's heading
The HTTP thread has moved through httr to httr2, and mocking from vcr to httptest2 — following the broader rOpenSci HTTP-stack reorganisation rather than any need of its own. The API thread runs the other way: 1.0.0 removed defaults for date_start and station and flipped latlon to FALSE, trading convenience for callers being explicit about what they request. New arguments in the same release widened what a query can ask for.
◆ Prediction
With the API stabilised at 1.0.0 and the HTTP stack settled on httr2, the next release is more likely to expose additional IEM query parameters than to change plumbing again.
simulist
0.0ANALYTICS
simulist stopped simulating clean outbreaks and started simulating the mess real surveillance data arrives in.
◆ Current state
simulist generates synthetic line list and contact-tracing data for outbreak analytics as part of the Epiverse-TRACE stack. It reached stable status in 0.6.0 and was published in JOSS alongside 0.7.0 in February 2026. Its distinguishing feature is no longer the epidemic simulation itself but the post-processing layer that degrades the output into realistic data.
◆ Where it's heading
The scope moved outward in two steps. 0.5.0 added truncate_linelist() and messy_linelist() to produce right-truncated snapshots and data with missingness and inconsistencies; 0.6.0 added censor_linelist() for grouping dates into intervals with a weekend-reporting effect. The simulation core has meanwhile settled — 0.7.0's changes are interface polish: weighted sex sampling and <epiparameter> objects accepted for reporting_delay.
◆ Prediction
Post-processing is where the recent work is, so further realism controls — additional reporting artefacts or interval schemes — are a likelier next step than new epidemic model structures.
Alternatives to riem and simulist
Other Analytics products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either riem or simulist.
Tplyr
Tplyr made clinical summary tables explain where every number came from.
rlistings
Clinical listings that keep inheriting their hardest problem — pagination — from the layer below.
hoardr
A cache-directory helper that has shipped nothing but CRAN-triggered patches for seven years.
gigs
gigs redesigned its whole conversion API for rOpenSci, then spent three releases getting the docs to build.
datasetjson
datasetjson rebuilt its object model to track the CDISC Dataset-JSON 1.1 schema.
See all riem alternatives → · See all simulist alternatives →
Recent activity from riem and simulist
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 6mo agosimulistJOSS paper corrections
- 6mo agosimulistWeighted sex sampling and epiparameter objects for reporting delays
- 11mo agosimulistcensor_linelist() adds interval censoring and a weekend effect
- 1y agosimulistPost-processing arrives: truncated snapshots and deliberately messy line lists ⚡
- 1y agoriem1.0.0 removes defaults and adds query arguments
- 1y agosimulistEvery sim_*() argument gains a default
- 1y agoriemDrops the last vcr usage in favour of httptest2
- 2y agosimulistInfectious period replaces contact interval; time-varying fatality risk added
- 2y agoriemTimezone and timestamp-parsing fixes
- 4y agoriemMoves to httr2 and httptest2
- 4y agoriemSwitches to newer IEM metadata web services
- 9y agoriemReduces dependencies to tibble alone
Frequently asked questions
What is the difference between riem and simulist?
They serve adjacent needs but don't currently overlap on shipped themes. riem and simulist are shipping at a similar cadence (velocity 0.0 vs 0.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is riem better than simulist?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. riem and simulist are shipping at a similar cadence (velocity 0.0 vs 0.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Analytics products to evaluate alongside.
What are the best alternatives to riem?
Top riem alternatives in Analytics are ranked by recent ship velocity. Browse the "riem alternatives" section above for the current picks, or visit /alternatives/riem for the full list with editorial commentary on each.
What are the best alternatives to simulist?
Top simulist alternatives in Analytics are ranked by recent ship velocity. Browse the "simulist alternatives" section above for the current picks, or visit /alternatives/simulist for the full list with editorial commentary on each.