smart_arrays_plot_polyline 2.0.2

Dart js
Flutter web

Plots small or big 1D arrays in form of polylines in the browser, optionally with axes and legend text. Many configuration options of the view are provided.

Smart Arrays Plot Polyline #

What the package can do for you #

  • This package was designed for Web applications which need to plot 1D arrays in form of polylines (curves in the x, y plane).
  • A plot may consist of one or several polylines (scaled relative to each other if desired), optionally with x and y axes, a coordinate grid, a text legend, selection icons, and marker text.
  • Many array viewing options are provided, such as colors, fonts, zooming, scaling, shifting, rotation, layout parameters.
  • Also, lists of points represented by circles or other shapes can be drawn, draw a curve using individual points rather than connecting the points by polylines.
  • The arrays to be plotted may have small or big sizes (even e.g. 1 million points). To achieve fast plotting without loosing information given typical screen or window sizes, a suitable data compression is applied before plotting (using the compression package listed at the end of the document).
  • Plotting is performed using Scalable Vector Graphics SVG.

The major API functionalities #

  • Class Polyline to construct a polyline plot of desired size from an array with optional layout and viewing parameters.

  • Class Axis to construct an x and/or y axis for a polyline plot.

  • Class XYGrid to construct a rectangular coordinate grid consisting of horizontal and/or vertical lines, to be used to overlay a polyline plot.

  • Class Legend to construct a legend consisting of a text line at the top ("top title") and optionally several more lines, each one preceded by a color rectangle (useful when displaying several polylines).

  • Class PhysUnits to convert between "physical units" and array indices, useful for axis annotation.

  • Classes Utils and JsonUtils providing useful helper functions.

  • Basic usage of the package: see example directory.

Detailed API

Please view the detailed API documentation in the API reference of this package (sidebar at the right of this page).

smart_arrays_base: Basic functions for 1D and 2D arrays

smart_arrays_numerics: Numerics with 1D and 2D arrays

smart_arrays_compress: Compress 1D and 2D arrays to a smaller size.

smart_arrays_dbstore: Store 1D and 2D arrays along with metadata on the local device.

smart_arrays_peaks: Detect peaks in 1D and 2D arrays.

smart_arrays_lmfit: Fits (x, y) data given as arrays to a specified model function using the Levenberg-Marquardt algorithm.

smart_lorentz-gauss: Compute Lorentz-Gauss (pseudo-Voigt) line shapes.

smart_signal_processing: Fourier transform and more of arrays.

smart_dialogs: Easy-to-use dialogs in Web applications

pub points

Plots small or big 1D arrays in form of polylines in the browser, optionally with axes and legend text. Many configuration options of the view are provided.



API reference





build_runner, build_web_compilers, pedantic, smart_arrays_base, smart_arrays_compress


Packages that depend on smart_arrays_plot_polyline