eplot

package
v1.0.16 Latest Latest
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 Go to latest Published: Sep 16, 2020 License: BSD-3-Clause Imports: 26 Imported by: 145

Documentation

Overview

Package eplot provides an interactive, graphical plotting utility for etable data.

It also provides various utilities to simplify the plotting of data from etable.Table data tables, using the gonum/plot package.

Index

Constants

View Source 
const (
	On       bool = true
	Off           = false
	FixMin        = true
	FloatMin      = false
	FixMax        = true
	FloatMax      = false
)

use these for SetColParams args

View Source 
const NColsHeader = 2

Variables

View Source 
var KiT_Plot2D = kit.Types.AddType(&Plot2D{}, Plot2DProps)
View Source 
var KiT_PlotTypes = kit.Enums.AddEnum(PlotTypesN, kit.NotBitFlag, nil)
View Source 
var Plot2DProps = ki.Props{
	"max-width":  -1,
	"max-height": -1,
	"ToolBar": ki.PropSlice{
		{"Update", ki.Props{
			"shortcut": "Command+U",
			"desc":     "update graph plot",
			"icon":     "update",
		}},
		{"SaveSVG", ki.Props{
			"label": "Save SVG...",
			"desc":  "save plot to an SVG file",
			"icon":  "file-save",
			"Args": ki.PropSlice{
				{"File Name", ki.Props{
					"default-field": "SVGFile",
					"ext":           ".svg",
				}},
			},
		}},
		{"SavePNG", ki.Props{
			"label": "Save PNG...",
			"desc":  "save current render of plot to PNG file",
			"icon":  "file-save",
			"Args": ki.PropSlice{
				{"File Name", ki.Props{
					"ext": ".png",
				}},
			},
		}},
		{"OpenCSV", ki.Props{
			"label": "Open CSV File...",
			"icon":  "file-open",
			"desc":  "Open CSV-formatted data (or any delimeter) -- also recognizes emergent-style headers",
			"Args": ki.PropSlice{
				{"File Name", ki.Props{
					"ext": ".tsv,.csv",
				}},
				{"Delimiter", ki.Props{
					"default": etable.Tab,
					"desc":    "delimiter between columns",
				}},
			},
		}},
		{"SaveCSV", ki.Props{
			"label": "Save Data...",
			"icon":  "file-save",
			"desc":  "Save CSV-formatted data (or any delimiter) -- header outputs emergent-style header data (recommended)",
			"Args": ki.PropSlice{
				{"File Name", ki.Props{
					"default-field": "DataFile",
					"ext":           ".tsv,.csv",
				}},
				{"Delimiter", ki.Props{
					"default": etable.Tab,
					"desc":    "delimiter between columns",
				}},
			},
		}},
	},
	"CallMethods": ki.PropSlice{
		{"SetColsByName", ki.Props{
			"desc": "Turn columns containing given string On or Off",
			"Args": ki.PropSlice{
				{"Name Contains", ki.Props{}},
				{"On", ki.Props{
					"default": true,
				}},
			},
		}},
	},
}
View Source 
var PlotColorNames = []string{"black", "red", "blue", "ForestGreen", "purple", "orange", "brown", "chartreuse", "navy", "cyan", "magenta", "tan", "salmon", "yellow", "SkyBlue", "pink"}

these are the plot color names to use in order for successive lines -- feel free to choose your own!

Functions

func PlotViewSVG 

func PlotViewSVG(plt *plot.Plot, svge *svg.Editor, scale float64)

PlotViewSVG shows the given gonum Plot in given GoGi svg editor widget. The scale rescales the default font sizes -- 2-4 recommended. This call must generally be enclosed within an UpdateStart / End as part of the overall update routine using it. if called from a different goroutine, it is essential to surround with BlockUpdates on Viewport as this does full damage to the tree.

func SaveSVGView 

func SaveSVGView(fname string, plt *plot.Plot, svge *svg.Editor, scale float64) error

SaveSVGView saves the given gonum Plot exactly as it is rendered given GoGi svg editor widget. The scale rescales the default font sizes -- 2-4 recommended.

func StringViewSVG 

func StringViewSVG(svgstr string, svge *svg.Editor, scale float64)

StringViewSVG shows the given svg string in given GoGi svg editor widget Scale to fit your window -- e.g., 2-3 depending on sizes

Types

type ColParams 

type ColParams struct {
	On        bool           `desc:"plot this column"`
	Col       string         `desc:"name of column we're plotting"`
	Range     minmax.Range64 `desc:"effective range of data to plot -- either end can be fixed"`
	FullRange minmax.F64     `desc:"full actual range of data -- only valid if specifically computed"`
	ColorName gi.ColorName   `desc:"if non-empty, color is set by this name"`
	Color     gi.Color       `desc:"color to use in plotting the line"`
	NTicks    int            `desc:"desired number of ticks"`
	Lbl       string         `desc:"if non-empty, this is an alternative label to use in plotting"`
	TensorIdx int            `` /* 153-byte string literal not displayed */
	ErrCol    string         `desc:"specifies a column containing error bars for this column"`
	IsString  bool           `inactive:"+" desc:"if true this is a string column -- plots as labels"`
	Plot      *Plot2D        `copy:"-" json:"-" xml:"-" view:"-" desc:"our plot, for update method"`
}

ColParams are parameters for plotting one column of data

func (*ColParams) CopyFrom added in v1.0.0 

func (cp *ColParams) CopyFrom(fr *ColParams)

CopyFrom copies from other col params

func (*ColParams) Defaults 

func (cp *ColParams) Defaults()

Defaults sets defaults if nil vals present

func (*ColParams) Label 

func (cp *ColParams) Label() string

func (*ColParams) Update 

func (cp *ColParams) Update()

Update satisfies the gi.Updater interface and will trigger display update on edits

func (*ColParams) UpdateVals 

func (cp *ColParams) UpdateVals()

UpdateVals update derived values e.g., color from color name

type ErrBarChart added in v1.0.6 

type ErrBarChart struct {
	// Values are the plotted values
	Values plotter.Values

	// YErrors is a copy of the Y errors for each point.
	Errors plotter.Values

	// Start is starting offset -- first bar is centered at this point.
	// Defaults to 1.
	Start float64

	// Stride is distance between bars. Defaults to 1.
	Stride float64

	// Width is the width of the bars in source data units.  Defaults to .8
	Width float64

	// Pad is additional space at start / end of data range, to keep bars from
	// overflowing ends.  This amount is subtracted from Start
	// and added to (len(Values)-1)*Stride -- no other accommodation for bar
	// width is provided, so that should be built into this value as well.
	Pad float64

	// Color is the fill color of the bars.
	Color color.Color

	// LineStyle is the style of the outline of the bars.
	draw.LineStyle

	// Offset is added to the X location of each bar.
	// When the Offset is zero, the bars are drawn
	// centered at their X location.
	Offset vg.Length

	// Horizontal dictates whether the bars should be in the vertical
	// (default) or horizontal direction. If Horizontal is true, all
	// X locations and distances referred to here will actually be Y
	// locations and distances.
	Horizontal bool
	// contains filtered or unexported fields
}

A ErrBarChart presents ordinally-organized data with rectangular bars with lengths proportional to the data values, and an optional error bar ("handle") at the top of the bar using given error value (single value, like a standard deviation etc, not drawn below the bar).

Bars are plotted centered at integer multiples of Stride plus Start offset. Full data range also includes Pad value to extend range beyond edge bar centers. Bar Width is in data units, e.g., should be <= Stride. Defaults provide a unit-spaced plot.

func NewErrBarChart added in v1.0.6 

func NewErrBarChart(vs, ers plotter.Valuer) (*ErrBarChart, error)

NewErrBarChart returns a new bar chart with a single bar for each value. The bars heights correspond to the values and their x locations correspond to the index of their value in the Valuer. Optional error-bar values can be provided.

func (*ErrBarChart) BarHeight added in v1.0.6 

func (b *ErrBarChart) BarHeight(i int) float64

BarHeight returns the maximum y value of the ith bar, taking into account any bars upon which it is stacked.

func (*ErrBarChart) DataRange added in v1.0.6 

func (b *ErrBarChart) DataRange() (xmin, xmax, ymin, ymax float64)

DataRange implements the plot.DataRanger interface.

func (*ErrBarChart) Defaults added in v1.0.6 

func (b *ErrBarChart) Defaults()

func (*ErrBarChart) GlyphBoxes added in v1.0.6 

func (b *ErrBarChart) GlyphBoxes(plt *plot.Plot) []plot.GlyphBox

GlyphBoxes implements the GlyphBoxer interface.

func (*ErrBarChart) Plot added in v1.0.6 

func (b *ErrBarChart) Plot(c draw.Canvas, plt *plot.Plot)

Plot implements the plot.Plotter interface.

func (*ErrBarChart) StackOn added in v1.0.6 

func (b *ErrBarChart) StackOn(on *ErrBarChart)

StackOn stacks a bar chart on top of another, and sets the bar positioning params to that of the chart upon which it is being stacked.

func (*ErrBarChart) Thumbnail added in v1.0.6 

func (b *ErrBarChart) Thumbnail(c *draw.Canvas)

Thumbnail fulfills the plot.Thumbnailer interface.

type Plot2D 

type Plot2D struct {
	gi.Layout
	Table    *etable.IdxView `desc:"the idxview of the table that we're plotting"`
	Params   PlotParams      `desc:"the overall plot parameters"`
	Cols     []*ColParams    `desc:"the parameters for each column of the table"`
	GPlot    *plot.Plot      `desc:"the gonum plot that actually does the plotting -- always save the last one generated"`
	SVGFile  gi.FileName     `desc:"current svg file"`
	DataFile gi.FileName     `desc:"current csv data file"`
	InPlot   bool            `inactive:"+" desc:"currently doing a plot"`
}

Plot2D is a GoGi Widget that provides a 2D plot of selected columns of etable data

func AddNewPlot2D 

func AddNewPlot2D(parent ki.Ki, name string) *Plot2D

AddNewPlot2D adds a new Plot2D to given parent node, with given name.

func (*Plot2D) ColParams 

func (pl *Plot2D) ColParams(colNm string) *ColParams

ColParams returns the current column parameters by name (to access by index, just use Cols directly) returns nil if not found

func (*Plot2D) ColParamsTry 

func (pl *Plot2D) ColParamsTry(colNm string) (*ColParams, error)

ColParamsTry returns the current column parameters by name (to access by index, just use Cols directly) Try version returns error message if not found.

func (*Plot2D) ColsConfig 

func (pl *Plot2D) ColsConfig()

ColsConfig configures the column gui buttons

func (*Plot2D) ColsLay 

func (pl *Plot2D) ColsLay() *gi.Frame

func (*Plot2D) ColsListUpdate 

func (pl *Plot2D) ColsListUpdate()

ColsListUpdate updates the list of columns

func (*Plot2D) ColsUpdate 

func (pl *Plot2D) ColsUpdate()

ColsUpdate updates the display toggles for all the cols

func (*Plot2D) Config 

func (pl *Plot2D) Config()

Config configures the overall view widget

func (*Plot2D) CopyFieldsFrom added in v1.0.0 

func (pl *Plot2D) CopyFieldsFrom(frm interface{})

func (*Plot2D) Defaults 

func (pl *Plot2D) Defaults()

func (*Plot2D) GenPlot 

func (pl *Plot2D) GenPlot()

GenPlot generates the plot and renders it to SVG It surrounds operation with InPlot true / false to prevent multiple updates

func (*Plot2D) GenPlotBar added in v1.0.0 

func (pl *Plot2D) GenPlotBar()

GenPlotBar generates a Bar plot, setting GPlot variable

func (*Plot2D) GenPlotXY added in v1.0.0 

func (pl *Plot2D) GenPlotXY()

GenPlotXY generates an XY (lines, points) plot, setting GPlot variable

func (*Plot2D) GoUpdate 

func (pl *Plot2D) GoUpdate()

GoUpdate updates the display based on current state of table. This version must be used when called from another goroutine does proper blocking to synchronize with updating in the main goroutine.

func (*Plot2D) GoUpdatePlot added in v1.0.0 

func (pl *Plot2D) GoUpdatePlot()

GoUpdatePlot updates the display based on current IdxView into table. This version must be used when called from another goroutine does proper blocking to synchronize with updating in the main goroutine.

func (*Plot2D) IsConfiged 

func (pl *Plot2D) IsConfiged() bool

IsConfiged returns true if widget is fully configured

func (*Plot2D) Layout2D added in v1.0.14 

func (pl *Plot2D) Layout2D(parBBox image.Rectangle, iter int) bool

func (*Plot2D) OpenCSV added in v1.0.0 

func (pl *Plot2D) OpenCSV(fname gi.FileName, delim etable.Delims)

OpenCSV opens the Table data from a csv (comma-separated values) file (or any delim)

func (*Plot2D) PlotConfig 

func (pl *Plot2D) PlotConfig()

PlotConfig configures the PlotView

func (*Plot2D) PlotLay 

func (pl *Plot2D) PlotLay() *gi.Layout

func (*Plot2D) PlotXAxis added in v1.0.0 

func (pl *Plot2D) PlotXAxis(plt *plot.Plot, ixvw *etable.IdxView) (xi int, xview *etable.IdxView, xbreaks []int, err error)

PlotXAxis processes the XAxis and returns its index and any breaks to insert based on negative X axis traversals or NaN values. xbreaks always ends in last row.

func (*Plot2D) SVGPlot 

func (pl *Plot2D) SVGPlot() *svg.Editor

func (*Plot2D) SaveCSV added in v1.0.0 

func (pl *Plot2D) SaveCSV(fname gi.FileName, delim etable.Delims)

SaveCSV saves the Table data to a csv (comma-separated values) file with headers (any delim)

func (*Plot2D) SavePNG added in v1.0.1 

func (pl *Plot2D) SavePNG(fname gi.FileName)

SavePNG saves the current plot to a png, capturing current render

func (*Plot2D) SaveSVG 

func (pl *Plot2D) SaveSVG(fname gi.FileName)

SaveSVG saves the plot to an svg -- first updates to ensure that plot is current

func (*Plot2D) SetAllCols added in v1.0.8 

func (pl *Plot2D) SetAllCols(on bool)

SetAllCols turns all Cols on or off (except X axis)

func (*Plot2D) SetColParams 

func (pl *Plot2D) SetColParams(colNm string, on bool, fixMin bool, min float64, fixMax bool, max float64) *ColParams

SetColParams sets main parameters for one column

func (*Plot2D) SetColsByName added in v1.0.8 

func (pl *Plot2D) SetColsByName(nameContains string, on bool)

SetColsByName turns cols On or Off if their name contains given string

func (*Plot2D) SetTable 

func (pl *Plot2D) SetTable(tab *etable.Table)

SetTable sets the table to view and updates view

func (*Plot2D) SetTableView added in v1.0.0 

func (pl *Plot2D) SetTableView(tab *etable.IdxView)

SetTableView sets the idxview of table to view and updates view

func (*Plot2D) Style2D 

func (pl *Plot2D) Style2D()

func (*Plot2D) Toolbar 

func (pl *Plot2D) Toolbar() *gi.ToolBar

func (*Plot2D) ToolbarConfig 

func (pl *Plot2D) ToolbarConfig()

func (*Plot2D) Update 

func (pl *Plot2D) Update()

Update updates the display based on current state of table. Calls Sequential method on etable.IdxView to view entire current table. This version can only be called within main goroutine for window eventloop -- use GoUpdate for other-goroutine updates.

func (*Plot2D) UpdatePlot added in v1.0.0 

func (pl *Plot2D) UpdatePlot()

UpdatePlot updates the display based on current IdxView into table. This version can only be called within main goroutine for window eventloop -- use GoUpdate for other-goroutine updates.

func (*Plot2D) XLabel 

func (pl *Plot2D) XLabel() string

XLabel returns the X-axis label

func (*Plot2D) YLabel 

func (pl *Plot2D) YLabel() string

YLabel returns the Y-axis label

type PlotParams 

type PlotParams struct {
	Title      string    `desc:"optional title at top of plot"`
	Type       PlotTypes `desc:"type of plot to generate.  For a Bar plot, items are plotted ordinally by row and the XAxis is optional"`
	Lines      bool      `desc:"plot lines"`
	Points     bool      `desc:"plot points with symbols"`
	LineWidth  float64   `desc:"width of lines"`
	PointSize  float64   `desc:"size of points"`
	BarWidth   float64   `min:"0.01" max:"1" desc:"width of bars for bar plot, as fraction of available space -- 1 = no gaps, .8 default"`
	NegXDraw   bool      `` /* 149-byte string literal not displayed */
	Scale      float64   `def:"2" desc:"overall scaling factor -- the larger the number, the larger the fonts are relative to the graph"`
	XAxisCol   string    `` /* 221-byte string literal not displayed */
	XAxisLabel string    `desc:"optional label to use for XAxis instead of column name"`
	YAxisLabel string    `desc:"optional label to use for YAxis -- if empty, first column name is used"`
	XAxisRot   float64   `desc:"rotation of the X Axis labels, in degrees"`
	LegendCol  string    `` /* 163-byte string literal not displayed */
	Plot       *Plot2D   `copy:"-" json:"-" xml:"-" view:"-" desc:"our plot, for update method"`
}

PlotParams are parameters for overall plot

func (*PlotParams) CopyFrom added in v1.0.0 

func (pp *PlotParams) CopyFrom(fr *PlotParams)

CopyFrom copies from other col params

func (*PlotParams) Defaults 

func (pp *PlotParams) Defaults()

Defaults sets defaults if nil vals present

func (*PlotParams) FmMeta added in v1.0.0 

func (pp *PlotParams) FmMeta(dt *etable.Table)

FmMeta sets plot params from meta data

func (*PlotParams) Update 

func (pp *PlotParams) Update()

Update satisfies the gi.Updater interface and will trigger display update on edits

type PlotTypes added in v1.0.0 

type PlotTypes int32

PlotTypes are different types of plots 

const (
	// XY is a standard line / point plot
	XY PlotTypes = iota

	// Bar plots vertical bars
	Bar

	PlotTypesN
)

func (*PlotTypes) FromString added in v1.0.0 

func (i *PlotTypes) FromString(s string) error

func (PlotTypes) MarshalJSON added in v1.0.0 

func (ev PlotTypes) MarshalJSON() ([]byte, error)

func (PlotTypes) String added in v1.0.0 

func (i PlotTypes) String() string

func (*PlotTypes) UnmarshalJSON added in v1.0.0 

func (ev *PlotTypes) UnmarshalJSON(b []byte) error

type TableXY 

type TableXY struct {
	Table          *etable.IdxView `desc:"the index view of data table to plot from"`
	XCol, YCol     int             `desc:"the indexes of the tensor columns to use for the X and Y data, respectively"`
	XRowSz, YRowSz int             `desc:"numer of elements in each row of data -- 1 for scalar, > 1 for multi-dimensional"`
	XIdx, YIdx     int             `desc:"the indexes of the element within each tensor cell if cells are n-dimensional, respectively"`
	LblCol         int             `desc:"the column to use for returning a label using Label interface -- for string cols"`
	ErrCol         int             `` /* 139-byte string literal not displayed */
	XRange         minmax.Range64
}

TableXY selects two columns from a etable.Table data table to plot in a gonum plot, satisfying the plotter.XYer and .Valuer interfaces (for bar charts). For Tensor-valued cells, Idx's specify tensor cell. Also satisfies the plotter.Labeler interface for labels attached to a line, and plotter.YErrorer for error bars.

func NewTableXY 

func NewTableXY(dt *etable.IdxView, xcol, xtsrIdx, ycol, ytsrIdx int) (*TableXY, error)

NewTableXY returns a new XY plot view onto the given IdxView of etable.Table (makes a copy), from given column indexes, and tensor indexes within each cell. Column indexes are enforced to be valid, with an error message if they are not.

func NewTableXYName added in v1.0.0 

func NewTableXYName(dt *etable.IdxView, xi, xtsrIdx int, ycol string, ytsrIdx int) (*TableXY, error)

NewTableXYName returns a new XY plot view onto the given IdxView of etable.Table (makes a copy), from given column name and tensor indexes within each cell. Column indexes are enforced to be valid, with an error message if they are not.

func (*TableXY) FilterVals added in v1.0.0 

func (txy *TableXY) FilterVals()

FilterVals removes items with NaN values, and out of X range

func (*TableXY) Label added in v1.0.0 

func (txy *TableXY) Label(row int) string

Label returns a label for given row in table, using plotter.Labeler interface

func (*TableXY) Len 

func (txy *TableXY) Len() int

Len returns the number of rows in the view of table

func (*TableXY) TRowValue added in v1.0.0 

func (txy *TableXY) TRowValue(row int) float64

TRowValue returns the y value at given true table row in table view

func (*TableXY) TRowXValue added in v1.0.0 

func (txy *TableXY) TRowXValue(row int) float64

TRowXValue returns an x value at given actual row in table

func (*TableXY) Validate 

func (txy *TableXY) Validate() error

Validate returns error message if column indexes are invalid, else nil it also sets column indexes to 0 so nothing crashes.

func (*TableXY) Value added in v1.0.0 

func (txy *TableXY) Value(row int) float64

Value returns the y value at given row in table view

func (*TableXY) XValue added in v1.0.0 

func (txy *TableXY) XValue(row int) float64

XValue returns an x value at given row in table view

func (*TableXY) XY 

func (txy *TableXY) XY(row int) (x, y float64)

XY returns an x, y pair at given row in table

func (*TableXY) YError added in v1.0.0 

func (txy *TableXY) YError(row int) (float64, float64)

YError returns a error bars using ploter.YErrorer interface

Source Files

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