NAME

Chart::Plotly::Trace::Histogram2d - The sample data from which statistics are computed is set in `x` and `y` (where `x` and `y` represent marginal distributions, binning is set in `xbins` and `ybins` in this case) or `z` (where `z` represent the 2D distribution and binning set, binning is set by `x` and `y` in this case). The resulting distribution is visualized as a heatmap.

VERSION

version 0.020

SYNOPSIS

use HTML::Show;
use Chart::Plotly;
use Chart::Plotly::Trace::Histogram2d;
my $histogram2d = Chart::Plotly::Trace::Histogram2d->new( x => [ map { int( 10 * rand() ) } ( 1 .. 500 ) ],
                                                          y => [ map { int( 10 * rand() ) } ( 1 .. 500 ) ] );

HTML::Show::show( Chart::Plotly::render_full_html( data => [$histogram2d] ) );

DESCRIPTION

The sample data from which statistics are computed is set in `x` and `y` (where `x` and `y` represent marginal distributions, binning is set in `xbins` and `ybins` in this case) or `z` (where `z` represent the 2D distribution and binning set, binning is set by `x` and `y` in this case). The resulting distribution is visualized as a heatmap.

Screenshot of the above example:

This file has been autogenerated from the official plotly.js source.

If you like Plotly, please support them: https://plot.ly/ Open source announcement: https://plot.ly/javascript/open-source-announcement/

Full reference: https://plot.ly/javascript/reference/#histogram2d

DISCLAIMER

This is an unofficial Plotly Perl module. Currently I'm not affiliated in any way with Plotly. But I think plotly.js is a great library and I want to use it with perl.

METHODS

TO_JSON

Serialize the trace to JSON. This method should be called only by JSON serializer.

type

Trace type.

ATTRIBUTES

• autobinx

  Determines whether or not the x axis bin attributes are picked by an algorithm. Note that this should be set to false if you want to manually set the number of bins using the attributes in xbins.

• autobiny

  Determines whether or not the y axis bin attributes are picked by an algorithm. Note that this should be set to false if you want to manually set the number of bins using the attributes in ybins.

• autocolorscale

  Determines whether or not the colorscale is picked using the sign of the input z values.

• colorbar

• colorscale

  Sets the colorscale. The colorscale must be an array containing arrays mapping a normalized value to an rgb, rgba, hex, hsl, hsv, or named color string. At minimum, a mapping for the lowest (0) and highest (1) values are required. For example, `[[0, 'rgb(0,0,255)', [1, 'rgb(255,0,0)']]`. To control the bounds of the colorscale in z space, use zmin and zmax

• customdata

  Assigns extra data each datum. This may be useful when listening to hover, click and selection events. Note that, *scatter* traces also appends customdata items in the markers DOM elements

• customdatasrc

  Sets the source reference on plot.ly for customdata .

• histfunc

  Specifies the binning function used for this histogram trace. If *count*, the histogram values are computed by counting the number of values lying inside each bin. If *sum*, *avg*, *min*, *max*, the histogram values are computed using the sum, the average, the minimum or the maximum of the values lying inside each bin respectively.

• histnorm

  Specifies the type of normalization used for this histogram trace. If **, the span of each bar corresponds to the number of occurrences (i.e. the number of data points lying inside the bins). If *percent* / *probability*, the span of each bar corresponds to the percentage / fraction of occurrences with respect to the total number of sample points (here, the sum of all bin HEIGHTS equals 100% / 1). If *density*, the span of each bar corresponds to the number of occurrences in a bin divided by the size of the bin interval (here, the sum of all bin AREAS equals the total number of sample points). If *probability density*, the area of each bar corresponds to the probability that an event will fall into the corresponding bin (here, the sum of all bin AREAS equals 1).

• hoverinfo

  Determines which trace information appear on hover. If `none` or `skip` are set, no information is displayed upon hovering. But, if `none` is set, click and hover events are still fired.

• hoverinfosrc

  Sets the source reference on plot.ly for hoverinfo .

• hoverlabel

• ids

  Assigns id labels to each datum. These ids for object constancy of data points during animation. Should be an array of strings, not numbers or any other type.

• idssrc

  Sets the source reference on plot.ly for ids .

• legendgroup

  Sets the legend group for this trace. Traces part of the same legend group hide/show at the same time when toggling legend items.

• marker

• name

  Sets the trace name. The trace name appear as the legend item and on hover.

• nbinsx

  Specifies the maximum number of desired bins. This value will be used in an algorithm that will decide the optimal bin size such that the histogram best visualizes the distribution of the data.

• nbinsy

  Specifies the maximum number of desired bins. This value will be used in an algorithm that will decide the optimal bin size such that the histogram best visualizes the distribution of the data.

• opacity

  Sets the opacity of the trace.

• reversescale

  Reverses the colorscale.

• selectedpoints

  Array containing integer indices of selected points. Has an effect only for traces that support selections. Note that an empty array means an empty selection where the `unselected` are turned on for all points, whereas, any other non-array values means no selection all where the `selected` and `unselected` styles have no effect.

• showlegend

  Determines whether or not an item corresponding to this trace is shown in the legend.

• showscale

  Determines whether or not a colorbar is displayed for this trace.

• stream

• transforms

• uid

• visible

  Determines whether or not this trace is visible. If *legendonly*, the trace is not drawn, but can appear as a legend item (provided that the legend itself is visible).

• x

  Sets the sample data to be binned on the x axis.

• xaxis

  Sets a reference between this trace's x coordinates and a 2D cartesian x axis. If *x* (the default value), the x coordinates refer to `layout.xaxis`. If *x2*, the x coordinates refer to `layout.xaxis2`, and so on.

• xbins

• xcalendar

  Sets the calendar system to use with `x` date data.

• xgap

  Sets the horizontal gap (in pixels) between bricks.

• xsrc

  Sets the source reference on plot.ly for x .

• y

  Sets the sample data to be binned on the y axis.

• yaxis

  Sets a reference between this trace's y coordinates and a 2D cartesian y axis. If *y* (the default value), the y coordinates refer to `layout.yaxis`. If *y2*, the y coordinates refer to `layout.yaxis2`, and so on.

• ybins

• ycalendar

  Sets the calendar system to use with `y` date data.

• ygap

  Sets the vertical gap (in pixels) between bricks.

• ysrc

  Sets the source reference on plot.ly for y .

• z

  Sets the aggregation data.

• zauto

  Determines the whether or not the color domain is computed with respect to the input data.

• zhoverformat

  Sets the hover text formatting rule using d3 formatting mini-languages which are very similar to those in Python. See: https://github.com/d3/d3-format/blob/master/README.md#locale_format

• zmax

  Sets the upper bound of color domain.

• zmin

  Sets the lower bound of color domain.

• zsmooth

  Picks a smoothing algorithm use to smooth `z` data.

• zsrc

  Sets the source reference on plot.ly for z .

AUTHOR

Pablo Rodríguez González <pablo.rodriguez.gonzalez@gmail.com>

COPYRIGHT AND LICENSE

This software is Copyright (c) 2018 by Pablo Rodríguez González.

This is free software, licensed under:

The MIT (X11) License