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XYcurve#

( General )

EPRI’s OpenDSS Documentation for this component: https://opendss.epri.com/XYCurveObject.html

#

Name

Type

Default

Units

Description

1

NPts

integer

Max number of points to expect in curve. This could get reset to the actual number of points defined if less than specified.

2

Points

array of reals

One way to enter the points in a curve. Enter x and y values as one array in the order [x1, y1, x2, y2, …]. For example:

Points=[1,100 2,200 3, 300]

Values separated by commas or white space. Zero fills arrays if insufficient number of values.
Redundant with XArray

3

YArray

array of reals

Alternate way to enter Y values. Enter an array of Y values corresponding to the X values. You can also use the syntax:
Yarray = (file=filename) !for text file one value per line
Yarray = (dblfile=filename) !for packed file of doubles
Yarray = (sngfile=filename) !for packed file of singles

Note: this property will reset Npts to a smaller value if the number of values in the files are fewer.

4

XArray

array of reals

Alternate way to enter X values. Enter an array of X values corresponding to the Y values. You can also use the syntax:
Xarray = (file=filename) !for text file one value per line
Xarray = (dblfile=filename) !for packed file of doubles
Xarray = (sngfile=filename) !for packed file of singles

Note: this property will reset Npts to a smaller value if the number of values in the files are fewer.

5

CSVFile

string

Switch input of X-Y curve data to a CSV file containing X, Y points one per line. NOTE: This action may reset the number of points to a lower value.

6

SngFile

string

Switch input of X-Y curve data to a binary file of SINGLES containing X, Y points packed one after another. NOTE: This action may reset the number of points to a lower value.

7

DblFile

string

Switch input of X-Y curve data to a binary file of DOUBLES containing X, Y points packed one after another. NOTE: This action may reset the number of points to a lower value.

8

X

real

Enter a value and then retrieve the interpolated Y value from the Y property. On input shifted then scaled to original curve. Scaled then shifted on output.

9

Y

real

Enter a value and then retrieve the interpolated X value from the X property. On input shifted then scaled to original curve. Scaled then shifted on output.

10

XShift

real

0.0

Shift X property values (in/out) by this amount of offset. Does not change original definition of arrays.

11

YShift

real

0.0

Shift Y property values (in/out) by this amount of offset. Does not change original definition of arrays.

12

XScale

real

1.0

Scale X property values (in/out) by this factor. Does not change original definition of arrays.

13

YScale

real

1.0

Scale Y property values (in/out) by this factor. Does not change original definition of arrays.

14

Like

string
(XYcurve name)
deprecated

Make like another object, e.g.:

New Capacitor.C2 like=c1 …