lsst.meas.astrom
21.0.0-4-g591bb35+92d8485332
|
Functions | |
def | noDistort (src) |
def | linearXDistort (src, frac=.001) |
def | quadraticDistortX (src, frac=1e-6) |
def | cubicDistortX (src, frac=1e-9) |
def | manyTermX (src, frac=1e-9) |
def | linearYDistort (src, frac=.001) |
def | quadraticDistortY (src, frac=1e-6) |
def | cubicDistortY (src, frac=1e-9) |
def | manyTermY (src, frac=1e-9) |
def | crossTerms1 (src, frac=1e-11) |
def | crossTerms2 (src, frac=1e-11) |
def | crossTerms3 (src, frac=1e-9) |
def | quadraticDistort (src, frac=1e-6) |
def | T2DistortX (src, frac=1e-6) |
def | distortList (srcList, function) |
def lsst.meas.astrom.sip.genDistortedImage.crossTerms1 | ( | src, | |
frac = 1e-11 |
|||
) |
Distort image Y by X, leaving X unchanged, 'x**3 - 2*x**2'. Parameters ---------- src : `lsst.afw.table.SourceRecord` A Source object frac : `float` How much to change Y by Returns ------- out : `lsst.afw.table.SourceRecord` A deep copy of src, with the value of Y changed
Definition at line 255 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.crossTerms2 | ( | src, | |
frac = 1e-11 |
|||
) |
Distort image X by Y, leaving Y unchanged, 'y**3 - 2*y**2 + 4*y - 9'. Parameters ---------- src : `lsst.afw.table.SourceRecord` A Source object frac : `float` How much to change X by Returns ------- out : `lsst.afw.table.SourceRecord` A deep copy of src, with the value of X changed
Definition at line 280 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.crossTerms3 | ( | src, | |
frac = 1e-9 |
|||
) |
Distort image X and Y , 'dx=x**3 - 2*x**2 + 4*x - 9', 'dy=y**3 - 2*y**2 + 4*y - 9'. Parameters ---------- src : `lsst.afw.table.SourceRecord` A Source object frac : `float` How much to change X and Y by Returns ------- out : `lsst.afw.table.SourceRecord` A deep copy of src, with the value of X and Y changed
Definition at line 305 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.cubicDistortX | ( | src, | |
frac = 1e-9 |
|||
) |
Distort image by terms with power <=2 i.e y, y^2, x, xy, x^2 Parameters ---------- src : `lsst.afw.table.SourceRecord` A Source object frac : `float` How much to change X by Returns ------- out : `lsst.afw.table.SourceRecord` A deep copy of src, with the value of x changed
Definition at line 101 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.cubicDistortY | ( | src, | |
frac = 1e-9 |
|||
) |
Distort image by terms with power <=2 i.e y, y^2, x, xy, x^2 Parameters ---------- src : `lsst.afw.table.SourceRecord` A Source object frac : `float` How much to change Y by Returns ------- out : `lsst.afw.table.SourceRecord` A deep copy of src, with the value of Y changed
Definition at line 203 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.distortList | ( | srcList, | |
function | |||
) |
Create a copy of srcList, and apply function to distort the values of x and y. Parameters ---------- srcList : `list` of `lsst.afw.table.SourceRecord` Input list of source to distort. function : `callable` A function that does a deep copy of a single Source Returns ------- out : `lsst.afw.table.SourceCatalog` Output catalog with distorted positions.
Definition at line 384 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.linearXDistort | ( | src, | |
frac = .001 |
|||
) |
Increase the x value in a Source object by frac. E.g src.x = 1000 --> 1001 if frac=.001 Parameters ---------- src : `lsst.afw.table.SourceRecord` A Source object frac : `float` How much to change X by Returns ------- out : `lsst.afw.table.SourceRecord` A deep copy of src, with the value of x changed
Definition at line 52 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.linearYDistort | ( | src, | |
frac = .001 |
|||
) |
Increase the y value in a Source object by frac. E.g src.x = 1000 --> 1001 if frac=.001 Parameters ---------- src : `lsst.afw.table.SourceRecord` A Source object frac : `float` How much to change Y by Returns ------- out : `lsst.afw.table.SourceRecord` A deep copy of src, with the value of Y changed
Definition at line 154 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.manyTermX | ( | src, | |
frac = 1e-9 |
|||
) |
Distort image by multiple powers of x, 'x**3 - 2*x**2 + 4*x - 9'. Parameters ---------- src : `lsst.afw.table.SourceRecord` A Source object frac : `float` How much to change X by Returns ------- out : `lsst.afw.table.SourceRecord` A deep copy of src, with the value of x changed
Definition at line 128 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.manyTermY | ( | src, | |
frac = 1e-9 |
|||
) |
Distort image by multiple terms of Y, 'y**3 - 2*y**2 + 4*y - 9'. Parameters ---------- src : `lsst.afw.table.SourceRecord` A Source object frac : `float` How much to change Y by Returns ------- out : `lsst.afw.table.SourceRecord` A deep copy of src, with the value of Y changed
Definition at line 230 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.noDistort | ( | src | ) |
Do no distortion. Used for sanity checking Parameters ---------- src : `lsst.afw.table.SourceRecord` Input record Returns ------- out : `lsst.afw.table.SourceRecord` Copy of input record.
Definition at line 34 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.quadraticDistort | ( | src, | |
frac = 1e-6 |
|||
) |
Distort image by terms with power <=2 i.e y, y^2, x, xy, x^2 Parameters ---------- src : `lsst.afw.table.SourceRecord` A Source object frac : `float` How much to change X Returns ------- out : `lsst.afw.table.SourceRecord` A deep copy of src, with the value of X
Definition at line 332 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.quadraticDistortX | ( | src, | |
frac = 1e-6 |
|||
) |
Distort image by terms with power <=2 i.e y, y^2, x, xy, x^2 Parameters ---------- src : `lsst.afw.table.SourceRecord` A Source object frac : `float` How much to change X by Returns ------- out : `lsst.afw.table.SourceRecord` A deep copy of src, with the value of x changed
Definition at line 74 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.quadraticDistortY | ( | src, | |
frac = 1e-6 |
|||
) |
Distort image by terms with power <=2 i.e y, y^2, x, xy, x^2 Parameters ---------- src : `lsst.afw.table.SourceRecord` A Source object frac : `float` How much to change Y by Returns ------- out : `lsst.afw.table.SourceRecord` A deep copy of src, with the value of Y changed
Definition at line 176 of file genDistortedImage.py.
def lsst.meas.astrom.sip.genDistortedImage.T2DistortX | ( | src, | |
frac = 1e-6 |
|||
) |
Distort image by a 2nd order Cheby polynomial Parameters ---------- src : `lsst.afw.table.SourceRecord` A Source object frac : `float` How much to change X Returns ------- out : `lsst.afw.table.SourceRecord` A deep copy of src, with the value of X
Definition at line 361 of file genDistortedImage.py.