Curve Inquiry Commands¶

These functions provide a mechanism for obtaining information about specified plotted curves which can be seen with the command list.

Note

< > = Required user input.

[ ] = Optional user input.

[PyDV]: = Python Data Visualizer command-line prompt.

area¶

pydv.pdv.Command.do_area(self, line)

Calculate the area of the curves.

[PyDV]: area <curve-list>

Ex:
    [PyDV]: area a
    [PyDV]: area a:b
    [PyDV]: area c d

disp¶

pydv.pdv.Command.do_disp(self, line)

Display the y-values in the specified curve(s).

[PyDV]: disp <curve-list> [format <format>]

Ex:
    [PyDV]: disp a
    [PyDV]: disp a:b
    [PyDV]: disp c d
    [PyDV]: disp c d format e
    [PyDV]: disp c d format .4f

dispx¶

pydv.pdv.Command.do_dispx(self, line)

Display the x-values in the specified curve(s).

[PyDV]: dispx <curve-list> [format <format>]

Ex:
    [PyDV]: dispx a
    [PyDV]: dispx a:b
    [PyDV]: dispx c d
    [PyDV]: dispx c d format e
    [PyDV]: dispx c d format .4f

eval¶

pydv.pdv.Command.do_eval(self, line)

Evaluate mathematical operations on curves.

[PyDV]: eval <curve-operations>

Ex:
    [PyDV]: eval a+b

getattributes¶

pydv.pdv.Command.do_getattributes(self, line)

Return a curve’s attributes, such as: color, style, width, etc.

[PyDV]: getattributes <curve-list>

Ex:
    [PyDV]: getattributes a
    [PyDV]: getattributes a:b
    [PyDV]: getattributes c d

getdomain¶

pydv.pdv.Command.do_getdomain(self, line)

Return domain of curves.

[PyDV]: getdomain <curve-list>

Ex:
    [PyDV]: getdomain a
    [PyDV]: getdomain a:b
    [PyDV]: getdomain c d

getlabel¶

pydv.pdv.Command.do_getlabel(self, line)

Return the given curve’s label.

[PyDV]: getlabel <curve-list>

Ex:
    [PyDV]: getlabel a
    [PyDV]: getlabel a:b
    [PyDV]: getlabel c d

getnumpoints¶

pydv.pdv.Command.do_getnumpoints(self, line)

Display the number of points for the given curve.

[PyDV]: getnumpoints <curve-list>

Ex:
    [PyDV]: getnumpoints a
    [PyDV]: getnumpoints a:b
    [PyDV]: getnumpoints c d

getrange¶

pydv.pdv.Command.do_getrange(self, line)

Return range of curves.

[PyDV]: getrange <curve-list>

Ex:
    [PyDV]: getrange a
    [PyDV]: getrange a:b
    [PyDV]: getrange c d

getx¶

pydv.pdv.Command.do_getx(self, line)

Return the x values for a given y.

[PyDV]: getx <curve-list> <y-value>

Ex:
    [PyDV]: getx a 1.2
    [PyDV]: getx a:b 1.2
    [PyDV]: getx c d 1.2

gety¶

pydv.pdv.Command.do_gety(self, line)

Return the y values for a given x.

[PyDV]: gety <curve-list> <x-value>

Ex:
    [PyDV]: gety a 3.3
    [PyDV]: gety a:b 3.3
    [PyDV]: gety c d 3.3

stats¶

pydv.pdv.Command.do_stats(self, line)

Show various statistics about the curve.

[PyDV]: stats <curve-list>

Ex:
    [PyDV]: stats a
    [PyDV]: stats a:b
    [PyDV]: stats c d

sum¶

pydv.pdv.Command.do_sum(self, line)

Calculate the sum of the x and y values of the curves.

[PyDV]: sum <curve-list>

Ex:
    [PyDV]: sum a
    [PyDV]: sum a:b
    [PyDV]: sum c d

getymin¶

pydv.pdv.Command.do_getymin(self, line)

Return xy-parings of the x values with the corresponding minimum y-value for the curve within the specified domain. If no domain is given, then the full domain range is used.

[PyDV]: getymin <curve> [<xmin> <xmax>]

Ex:
    [PyDV]: getymin a
    [PyDV]: getymin a 2 7
    [PyDV]: getymin a:b
    [PyDV]: getymin a:b 2 7
    [PyDV]: getymin c d
    [PyDV]: getymin c d 2 7

getymax¶

pydv.pdv.Command.do_getymax(self, line)

Return xy-parings of the x values with the corresponding maximum y-value for the curve within the specified domain. If no domain is given, then the full domain range is used.

[PyDV]: getymax <curve> [<xmin> <xmax>]

Ex:
    [PyDV]: getymax a
    [PyDV]: getymax a 2 7
    [PyDV]: getymax a:b
    [PyDV]: getymax a:b 2 7
    [PyDV]: getymax c d
    [PyDV]: getymax c d 2 7