plotly.graph_objects.densitymap package¶
- 
class plotly.graph_objects.densitymap.ColorBar(arg=None, bgcolor=None, bordercolor=None, borderwidth=None, dtick=None, exponentformat=None, labelalias=None, len=None, lenmode=None, minexponent=None, nticks=None, orientation=None, outlinecolor=None, outlinewidth=None, separatethousands=None, showexponent=None, showticklabels=None, showtickprefix=None, showticksuffix=None, thickness=None, thicknessmode=None, tick0=None, tickangle=None, tickcolor=None, tickfont=None, tickformat=None, tickformatstops=None, tickformatstopdefaults=None, ticklabeloverflow=None, ticklabelposition=None, ticklabelstep=None, ticklen=None, tickmode=None, tickprefix=None, ticks=None, ticksuffix=None, ticktext=None, ticktextsrc=None, tickvals=None, tickvalssrc=None, tickwidth=None, title=None, x=None, xanchor=None, xpad=None, xref=None, y=None, yanchor=None, ypad=None, yref=None, **kwargs)¶
- Bases: - plotly.basedatatypes.BaseTraceHierarchyType- 
property bgcolor¶
- Sets the color of padded area. - The ‘bgcolor’ property is a color and may be specified as:
- A hex string (e.g. ‘#ff0000’) 
- An rgb/rgba string (e.g. ‘rgb(255,0,0)’) 
- An hsl/hsla string (e.g. ‘hsl(0,100%,50%)’) 
- An hsv/hsva string (e.g. ‘hsv(0,100%,100%)’) 
- A named CSS color: see https://plotly.com/python/css-colors/ for a list 
 
 - Returns
- Return type
 
 - 
property bordercolor¶
- Sets the axis line color. - The ‘bordercolor’ property is a color and may be specified as:
- A hex string (e.g. ‘#ff0000’) 
- An rgb/rgba string (e.g. ‘rgb(255,0,0)’) 
- An hsl/hsla string (e.g. ‘hsl(0,100%,50%)’) 
- An hsv/hsva string (e.g. ‘hsv(0,100%,100%)’) 
- A named CSS color: see https://plotly.com/python/css-colors/ for a list 
 
 - Returns
- Return type
 
 - 
property borderwidth¶
- Sets the width (in px) or the border enclosing this color bar. - The ‘borderwidth’ property is a number and may be specified as:
- An int or float in the interval [0, inf] 
 
 - Returns
- Return type
- int|float 
 
 - 
property dtick¶
- Sets the step in-between ticks on this axis. Use with - tick0. Must be a positive number, or special strings available to “log” and “date” axes. If the axis- typeis “log”, then ticks are set every 10^(n*dtick) where n is the tick number. For example, to set a tick mark at 1, 10, 100, 1000, … set dtick to 1. To set tick marks at 1, 100, 10000, … set dtick to 2. To set tick marks at 1, 5, 25, 125, 625, 3125, … set dtick to log_10(5), or 0.69897000433. “log” has several special values; “L<f>”, where- fis a positive number, gives ticks linearly spaced in value (but not position). For example- tick0= 0.1,- dtick= “L0.5” will put ticks at 0.1, 0.6, 1.1, 1.6 etc. To show powers of 10 plus small digits between, use “D1” (all digits) or “D2” (only 2 and 5).- tick0is ignored for “D1” and “D2”. If the axis- typeis “date”, then you must convert the time to milliseconds. For example, to set the interval between ticks to one day, set- dtickto 86400000.0. “date” also has special values “M<n>” gives ticks spaced by a number of months.- nmust be a positive integer. To set ticks on the 15th of every third month, set- tick0to “2000-01-15” and- dtickto “M3”. To set ticks every 4 years, set- dtickto “M48”- The ‘dtick’ property accepts values of any type - Returns
- Return type
- Any 
 
 - 
property exponentformat¶
- Determines a formatting rule for the tick exponents. For example, consider the number 1,000,000,000. If “none”, it appears as 1,000,000,000. If “e”, 1e+9. If “E”, 1E+9. If “power”, 1x10^9 (with 9 in a super script). If “SI”, 1G. If “B”, 1B. - The ‘exponentformat’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘none’, ‘e’, ‘E’, ‘power’, ‘SI’, ‘B’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property labelalias¶
- Replacement text for specific tick or hover labels. For example using {US: ‘USA’, CA: ‘Canada’} changes US to USA and CA to Canada. The labels we would have shown must match the keys exactly, after adding any tickprefix or ticksuffix. For negative numbers the minus sign symbol used (U+2212) is wider than the regular ascii dash. That means you need to use −1 instead of -1. labelalias can be used with any axis type, and both keys (if needed) and values (if desired) can include html- like tags or MathJax. - The ‘labelalias’ property accepts values of any type - Returns
- Return type
- Any 
 
 - 
property len¶
- Sets the length of the color bar This measure excludes the padding of both ends. That is, the color bar length is this length minus the padding on both ends. - The ‘len’ property is a number and may be specified as:
- An int or float in the interval [0, inf] 
 
 - Returns
- Return type
- int|float 
 
 - 
property lenmode¶
- Determines whether this color bar’s length (i.e. the measure in the color variation direction) is set in units of plot “fraction” or in *pixels. Use - lento set the value.- The ‘lenmode’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘fraction’, ‘pixels’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property minexponent¶
- Hide SI prefix for 10^n if |n| is below this number. This only has an effect when - tickformatis “SI” or “B”.- The ‘minexponent’ property is a number and may be specified as:
- An int or float in the interval [0, inf] 
 
 - Returns
- Return type
- int|float 
 
 - 
property nticks¶
- Specifies the maximum number of ticks for the particular axis. The actual number of ticks will be chosen automatically to be less than or equal to - nticks. Has an effect only if- tickmodeis set to “auto”.- The ‘nticks’ property is a integer and may be specified as:
- An int (or float that will be cast to an int) in the interval [0, 9223372036854775807] 
 
 - Returns
- Return type
 
 - 
property orientation¶
- Sets the orientation of the colorbar. - The ‘orientation’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘h’, ‘v’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property outlinecolor¶
- Sets the axis line color. - The ‘outlinecolor’ property is a color and may be specified as:
- A hex string (e.g. ‘#ff0000’) 
- An rgb/rgba string (e.g. ‘rgb(255,0,0)’) 
- An hsl/hsla string (e.g. ‘hsl(0,100%,50%)’) 
- An hsv/hsva string (e.g. ‘hsv(0,100%,100%)’) 
- A named CSS color: see https://plotly.com/python/css-colors/ for a list 
 
 - Returns
- Return type
 
 - 
property outlinewidth¶
- Sets the width (in px) of the axis line. - The ‘outlinewidth’ property is a number and may be specified as:
- An int or float in the interval [0, inf] 
 
 - Returns
- Return type
- int|float 
 
 - 
property separatethousands¶
- If “true”, even 4-digit integers are separated - The ‘separatethousands’ property must be specified as a bool (either True, or False) - Returns
- Return type
 
 - 
property showexponent¶
- If “all”, all exponents are shown besides their significands. If “first”, only the exponent of the first tick is shown. If “last”, only the exponent of the last tick is shown. If “none”, no exponents appear. - The ‘showexponent’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘all’, ‘first’, ‘last’, ‘none’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property showticklabels¶
- Determines whether or not the tick labels are drawn. - The ‘showticklabels’ property must be specified as a bool (either True, or False) - Returns
- Return type
 
 - 
property showtickprefix¶
- If “all”, all tick labels are displayed with a prefix. If “first”, only the first tick is displayed with a prefix. If “last”, only the last tick is displayed with a suffix. If “none”, tick prefixes are hidden. - The ‘showtickprefix’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘all’, ‘first’, ‘last’, ‘none’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property showticksuffix¶
- Same as - showtickprefixbut for tick suffixes.- The ‘showticksuffix’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘all’, ‘first’, ‘last’, ‘none’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property thickness¶
- Sets the thickness of the color bar This measure excludes the size of the padding, ticks and labels. - The ‘thickness’ property is a number and may be specified as:
- An int or float in the interval [0, inf] 
 
 - Returns
- Return type
- int|float 
 
 - 
property thicknessmode¶
- Determines whether this color bar’s thickness (i.e. the measure in the constant color direction) is set in units of plot “fraction” or in “pixels”. Use - thicknessto set the value.- The ‘thicknessmode’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘fraction’, ‘pixels’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property tick0¶
- Sets the placement of the first tick on this axis. Use with - dtick. If the axis- typeis “log”, then you must take the log of your starting tick (e.g. to set the starting tick to 100, set the- tick0to 2) except when- dtick`=*L<f>* (see `dtickfor more info). If the axis- typeis “date”, it should be a date string, like date data. If the axis- typeis “category”, it should be a number, using the scale where each category is assigned a serial number from zero in the order it appears.- The ‘tick0’ property accepts values of any type - Returns
- Return type
- Any 
 
 - 
property tickangle¶
- Sets the angle of the tick labels with respect to the horizontal. For example, a - tickangleof -90 draws the tick labels vertically.- The ‘tickangle’ property is a angle (in degrees) that may be specified as a number between -180 and 180. Numeric values outside this range are converted to the equivalent value (e.g. 270 is converted to -90). - Returns
- Return type
- int|float 
 
 - 
property tickcolor¶
- Sets the tick color. - The ‘tickcolor’ property is a color and may be specified as:
- A hex string (e.g. ‘#ff0000’) 
- An rgb/rgba string (e.g. ‘rgb(255,0,0)’) 
- An hsl/hsla string (e.g. ‘hsl(0,100%,50%)’) 
- An hsv/hsva string (e.g. ‘hsv(0,100%,100%)’) 
- A named CSS color: see https://plotly.com/python/css-colors/ for a list 
 
 - Returns
- Return type
 
 - 
property tickfont¶
- Sets the color bar’s tick label font - The ‘tickfont’ property is an instance of Tickfont that may be specified as: - An instance of - plotly.graph_objects.densitymap.colorbar.Tickfont
- A dict of string/value properties that will be passed to the Tickfont constructor 
 - Returns
- Return type
 
 - 
property tickformat¶
- Sets the tick label formatting rule using d3 formatting mini- languages which are very similar to those in Python. For numbers, see: https://github.com/d3/d3-format/tree/v1.4.5#d3-format. And for dates see: https://github.com/d3/d3-time- format/tree/v2.2.3#locale_format. We add two items to d3’s date formatter: “%h” for half of the year as a decimal number as well as “%{n}f” for fractional seconds with n digits. For example, 2016-10-13 09:15:23.456 with tickformat “%H~%M~%S.%2f” would display “09~15~23.46” - The ‘tickformat’ property is a string and must be specified as:
- A string 
- A number that will be converted to a string 
 
 - Returns
- Return type
 
 - 
property tickformatstopdefaults¶
- When used in a template (as layout.template.data.densitymap.col orbar.tickformatstopdefaults), sets the default property values to use for elements of densitymap.colorbar.tickformatstops - The ‘tickformatstopdefaults’ property is an instance of Tickformatstop that may be specified as: - An instance of - plotly.graph_objects.densitymap.colorbar.Tickformatstop
- A dict of string/value properties that will be passed to the Tickformatstop constructor 
 - Returns
- Return type
 
 - 
property tickformatstops¶
- The ‘tickformatstops’ property is a tuple of instances of Tickformatstop that may be specified as: - A list or tuple of instances of plotly.graph_objects.densitymap.colorbar.Tickformatstop 
- A list or tuple of dicts of string/value properties that will be passed to the Tickformatstop constructor 
 - Returns
- Return type
- tuple[plotly.graph_objects.densitymap.colorbar.Tickformatstop] 
 
 - 
property ticklabeloverflow¶
- Determines how we handle tick labels that would overflow either the graph div or the domain of the axis. The default value for inside tick labels is hide past domain. In other cases the default is hide past div. - The ‘ticklabeloverflow’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘allow’, ‘hide past div’, ‘hide past domain’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property ticklabelposition¶
- Determines where tick labels are drawn relative to the ticks. Left and right options are used when - orientationis “h”, top and bottom when- orientationis “v”.- The ‘ticklabelposition’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘outside’, ‘inside’, ‘outside top’, ‘inside top’, ‘outside left’, ‘inside left’, ‘outside right’, ‘inside right’, ‘outside bottom’, ‘inside bottom’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property ticklabelstep¶
- Sets the spacing between tick labels as compared to the spacing between ticks. A value of 1 (default) means each tick gets a label. A value of 2 means shows every 2nd label. A larger value n means only every nth tick is labeled. - tick0determines which labels are shown. Not implemented for axes with- type“log” or “multicategory”, or when- tickmodeis “array”.- The ‘ticklabelstep’ property is a integer and may be specified as:
- An int (or float that will be cast to an int) in the interval [1, 9223372036854775807] 
 
 - Returns
- Return type
 
 - 
property ticklen¶
- Sets the tick length (in px). - The ‘ticklen’ property is a number and may be specified as:
- An int or float in the interval [0, inf] 
 
 - Returns
- Return type
- int|float 
 
 - 
property tickmode¶
- Sets the tick mode for this axis. If “auto”, the number of ticks is set via - nticks. If “linear”, the placement of the ticks is determined by a starting position- tick0and a tick step- dtick(“linear” is the default value if- tick0and- dtickare provided). If “array”, the placement of the ticks is set via- tickvalsand the tick text is- ticktext. (“array” is the default value if- tickvalsis provided).- The ‘tickmode’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘auto’, ‘linear’, ‘array’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property tickprefix¶
- Sets a tick label prefix. - The ‘tickprefix’ property is a string and must be specified as:
- A string 
- A number that will be converted to a string 
 
 - Returns
- Return type
 
 - 
property ticks¶
- Determines whether ticks are drawn or not. If “”, this axis’ ticks are not drawn. If “outside” (“inside”), this axis’ are drawn outside (inside) the axis lines. - The ‘ticks’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘outside’, ‘inside’, ‘’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property ticksuffix¶
- Sets a tick label suffix. - The ‘ticksuffix’ property is a string and must be specified as:
- A string 
- A number that will be converted to a string 
 
 - Returns
- Return type
 
 - 
property ticktext¶
- Sets the text displayed at the ticks position via - tickvals. Only has an effect if- tickmodeis set to “array”. Used with- tickvals.- The ‘ticktext’ property is an array that may be specified as a tuple, list, numpy array, or pandas Series - Returns
- Return type
- numpy.ndarray 
 
 - 
property ticktextsrc¶
- Sets the source reference on Chart Studio Cloud for - ticktext.- The ‘ticktextsrc’ property must be specified as a string or as a plotly.grid_objs.Column object - Returns
- Return type
 
 - 
property tickvals¶
- Sets the values at which ticks on this axis appear. Only has an effect if - tickmodeis set to “array”. Used with- ticktext.- The ‘tickvals’ property is an array that may be specified as a tuple, list, numpy array, or pandas Series - Returns
- Return type
- numpy.ndarray 
 
 - 
property tickvalssrc¶
- Sets the source reference on Chart Studio Cloud for - tickvals.- The ‘tickvalssrc’ property must be specified as a string or as a plotly.grid_objs.Column object - Returns
- Return type
 
 - 
property tickwidth¶
- Sets the tick width (in px). - The ‘tickwidth’ property is a number and may be specified as:
- An int or float in the interval [0, inf] 
 
 - Returns
- Return type
- int|float 
 
 - 
property title¶
- The ‘title’ property is an instance of Title that may be specified as: - An instance of - plotly.graph_objects.densitymap.colorbar.Title
- A dict of string/value properties that will be passed to the Title constructor 
 - Returns
- Return type
 
 - 
property x¶
- Sets the x position with respect to - xrefof the color bar (in plot fraction). When- xrefis “paper”, defaults to 1.02 when- orientationis “v” and 0.5 when- orientationis “h”. When- xrefis “container”, defaults to 1 when- orientationis “v” and 0.5 when- orientationis “h”. Must be between 0 and 1 if- xrefis “container” and between “-2” and 3 if- xrefis “paper”.- The ‘x’ property is a number and may be specified as:
- An int or float 
 
 - Returns
- Return type
- int|float 
 
 - 
property xanchor¶
- Sets this color bar’s horizontal position anchor. This anchor binds the - xposition to the “left”, “center” or “right” of the color bar. Defaults to “left” when- orientationis “v” and “center” when- orientationis “h”.- The ‘xanchor’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘left’, ‘center’, ‘right’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property xpad¶
- Sets the amount of padding (in px) along the x direction. - The ‘xpad’ property is a number and may be specified as:
- An int or float in the interval [0, inf] 
 
 - Returns
- Return type
- int|float 
 
 - 
property xref¶
- Sets the container - xrefers to. “container” spans the entire- widthof the plot. “paper” refers to the width of the plotting area only.- The ‘xref’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘container’, ‘paper’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property y¶
- Sets the y position with respect to - yrefof the color bar (in plot fraction). When- yrefis “paper”, defaults to 0.5 when- orientationis “v” and 1.02 when- orientationis “h”. When- yrefis “container”, defaults to 0.5 when- orientationis “v” and 1 when- orientationis “h”. Must be between 0 and 1 if- yrefis “container” and between “-2” and 3 if- yrefis “paper”.- The ‘y’ property is a number and may be specified as:
- An int or float 
 
 - Returns
- Return type
- int|float 
 
 - 
property yanchor¶
- Sets this color bar’s vertical position anchor This anchor binds the - yposition to the “top”, “middle” or “bottom” of the color bar. Defaults to “middle” when- orientationis “v” and “bottom” when- orientationis “h”.- The ‘yanchor’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘top’, ‘middle’, ‘bottom’] 
 
 
 - Returns
- Return type
- Any 
 
 - 
property ypad¶
- Sets the amount of padding (in px) along the y direction. - The ‘ypad’ property is a number and may be specified as:
- An int or float in the interval [0, inf] 
 
 - Returns
- Return type
- int|float 
 
 - 
property yref¶
- Sets the container - yrefers to. “container” spans the entire- heightof the plot. “paper” refers to the height of the plotting area only.- The ‘yref’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘container’, ‘paper’] 
 
 
 - Returns
- Return type
- Any 
 
 
- 
property 
- 
class plotly.graph_objects.densitymap.Hoverlabel(arg=None, align=None, alignsrc=None, bgcolor=None, bgcolorsrc=None, bordercolor=None, bordercolorsrc=None, font=None, namelength=None, namelengthsrc=None, showarrow=None, **kwargs)¶
- Bases: - plotly.basedatatypes.BaseTraceHierarchyType- 
property align¶
- Sets the horizontal alignment of the text content within hover label box. Has an effect only if the hover label text spans more two or more lines - The ‘align’ property is an enumeration that may be specified as:
- One of the following enumeration values:
- [‘left’, ‘right’, ‘auto’] 
 
- A tuple, list, or one-dimensional numpy array of the above 
 
 - Returns
- Return type
- Any|numpy.ndarray 
 
 - 
property alignsrc¶
- Sets the source reference on Chart Studio Cloud for - align.- The ‘alignsrc’ property must be specified as a string or as a plotly.grid_objs.Column object - Returns
- Return type
 
 - 
property bgcolor¶
- Sets the background color of the hover labels for this trace - The ‘bgcolor’ property is a color and may be specified as:
- A hex string (e.g. ‘#ff0000’) 
- An rgb/rgba string (e.g. ‘rgb(255,0,0)’) 
- An hsl/hsla string (e.g. ‘hsl(0,100%,50%)’) 
- An hsv/hsva string (e.g. ‘hsv(0,100%,100%)’) 
- A named CSS color: see https://plotly.com/python/css-colors/ for a list 
- A list or array of any of the above 
 
 - Returns
- Return type
- str|numpy.ndarray 
 
 - 
property bgcolorsrc¶
- Sets the source reference on Chart Studio Cloud for - bgcolor.- The ‘bgcolorsrc’ property must be specified as a string or as a plotly.grid_objs.Column object - Returns
- Return type
 
 - 
property bordercolor¶
- Sets the border color of the hover labels for this trace. - The ‘bordercolor’ property is a color and may be specified as:
- A hex string (e.g. ‘#ff0000’) 
- An rgb/rgba string (e.g. ‘rgb(255,0,0)’) 
- An hsl/hsla string (e.g. ‘hsl(0,100%,50%)’) 
- An hsv/hsva string (e.g. ‘hsv(0,100%,100%)’) 
- A named CSS color: see https://plotly.com/python/css-colors/ for a list 
- A list or array of any of the above 
 
 - Returns
- Return type
- str|numpy.ndarray 
 
 - 
property bordercolorsrc¶
- Sets the source reference on Chart Studio Cloud for - bordercolor.- The ‘bordercolorsrc’ property must be specified as a string or as a plotly.grid_objs.Column object - Returns
- Return type
 
 - 
property font¶
- Sets the font used in hover labels. - The ‘font’ property is an instance of Font that may be specified as: - An instance of - plotly.graph_objects.densitymap.hoverlabel.Font
- A dict of string/value properties that will be passed to the Font constructor 
 - Returns
- Return type
 
 - 
property namelength¶
- Sets the default length (in number of characters) of the trace name in the hover labels for all traces. -1 shows the whole name regardless of length. 0-3 shows the first 0-3 characters, and an integer >3 will show the whole name if it is less than that many characters, but if it is longer, will truncate to - namelength - 3characters and add an ellipsis.- The ‘namelength’ property is a integer and may be specified as:
- An int (or float that will be cast to an int) in the interval [-1, 9223372036854775807] 
- A tuple, list, or one-dimensional numpy array of the above 
 
 - Returns
- Return type
- int|numpy.ndarray 
 
 - 
property namelengthsrc¶
- Sets the source reference on Chart Studio Cloud for - namelength.- The ‘namelengthsrc’ property must be specified as a string or as a plotly.grid_objs.Column object - Returns
- Return type
 
 
- 
property 
- 
class plotly.graph_objects.densitymap.Legendgrouptitle(arg=None, font=None, text=None, **kwargs)¶
- Bases: - plotly.basedatatypes.BaseTraceHierarchyType- 
property font¶
- Sets this legend group’s title font. - The ‘font’ property is an instance of Font that may be specified as: - An instance of - plotly.graph_objects.densitymap.legendgrouptitle.Font
- A dict of string/value properties that will be passed to the Font constructor 
 - Returns
- Return type
 
 
- 
property 
- 
class plotly.graph_objects.densitymap.Stream(arg=None, maxpoints=None, token=None, **kwargs)¶
- Bases: - plotly.basedatatypes.BaseTraceHierarchyType- 
property maxpoints¶
- Sets the maximum number of points to keep on the plots from an incoming stream. If - maxpointsis set to 50, only the newest 50 points will be displayed on the plot.- The ‘maxpoints’ property is a number and may be specified as:
- An int or float in the interval [0, 10000] 
 
 - Returns
- Return type
- int|float 
 
 - 
property token¶
- The stream id number links a data trace on a plot with a stream. See https://chart-studio.plotly.com/settings for more details. - The ‘token’ property is a string and must be specified as:
- A non-empty string 
 
 - Returns
- Return type
 
 
- 
property 
