RainbowStats™ · Command reference
LINE_CHART
Draw time-series lines for one or more series.
Syntax
LINE_CHART(series,...)
LINE_CHART(seriesList)Example
LINE_CHART(SERIES_SINCE(INDPRO,20000101))Notes
Series and series lists are flattened into one chart. Existing dates and units are retained.
Charting large datasets with EPICYCLE_LINE_CHART
Use LINE_CHART when individual observations matter, such as the yield on a particular day.
For an overview of several long daily histories, EPICYCLE_LINE_CHART
can send a much smaller chart through MCP. The browser reconstructs each line from a trend and Fourier
coefficients at the series' original observation dates.
EPICYCLE_LINE_CHART(seriesList[, components])Collect the series in LIST(...), even for a single series. Each series needs at least
two finite observations in strictly increasing date order. The optional second argument is a positive
integer giving the maximum number of Fourier components per series. Omitting it uses 128.
Example: four daily Treasury yields
Rates=LIST(DGS2,DGS5,DGS10,DGS30)
Chart=EPICYCLE_LINE_CHART(Rates,128)A smaller component count gives a smoother curve and a smaller payload. A larger count can capture
more short-term variation. Even the hover values are approximations, and sharp moves can be smoothed
or overshot. To check a spike, plot the same dates with LINE_CHART(Rates).
Use the original series for calculations.
For a blog post, use Save Active Panel to export the rendered chart as a scalable SVG. The Fourier representation reduces the data sent to the browser. The SVG exporter separately simplifies dense paths for a smaller image file.