Data Manipulation Functions - Revision history

Dean Whittaker at 14:04, 1 April 2008

2008-04-01T14:04:11Z

2008-03-18T15:09:26Z

2008-03-18T15:09:13Z

2008-03-18T15:08:16Z

2008-03-18T15:07:46Z

2008-03-17T16:51:48Z

2008-03-17T16:51:21Z

2008-03-17T16:51:05Z

2008-03-17T16:50:33Z

2008-03-17T16:39:06Z

@@ Line 38: / Line 38: @@
 >> wwout = scale(ww, xyscale)</pre>
-* Input is an [[IXT_dataset_2d]] object
+* Input is an [[IXTdataset_2d]] object
-* Output is an [[IXT_dataset_2d]] object
+* Output is an [[IXTdataset_2d]] object
 * Scales x by factor xscale
 * Scales y by factor yscale
@@ Line 47: / Line 47: @@
 <pre>>> wout = scale(w, xscale)</pre>
-* Input is an [[IXTdatset_1d]] object
+* Input is an [[IXTdataset_1d]] object
 * Output is an [[IXTdataset_1d]] object
 * scales x by an amount xscale
@@ Line 71: / Line 71: @@
 <pre>>> flip_y(ww)</pre>
-Reverses the order of y rows in [[IXTdatset_2d]]
+Reverses the order of y rows in [[IXTdataset_2d]]
 <pre>>> flip(ww)

← Older revision		Revision as of 15:09, 18 March 2008
Line 1:		Line 1:
	Data manipulation functions change the data in some way, such as scaling or flipping it. The functions available are		Data manipulation functions change the data in some way, such as scaling or flipping it. The functions available are
		+

@@ Line 3: / Line 3: @@
 ==Shift Functions==
 These functions add a value to one of the independent variable arrays (x or y), leaving any related data (such as the signal data) untouched. For instance if an x array, [10, 20, 30, 40, 50], is shifted by 2 the output x array will be [12, 22, 32, 42, 52].
@@ Line 29: / Line 30: @@
 ==Scale Functions==
 Multiplies one of the independent variable arrays (x or y) by a constant. For instance if an x array, [10, 20, 30, 40, 50], is scaled by 2 the output x array will be [20, 40, 60, 80, 100].
@@ Line 54: / Line 56: @@
 will multiply every y value in wwout by 4
 ==Flip Functions==
 All data, including associated signal and error data is reversed in the order it appears in the dataset. For instance if a dataset has x data [1, 2, 3, 4], signal data [34, 35, 36, 37] and error data [0.1 0.2 0.1 0.1] then the flipped data will have xdata [4, 3, 2, 1], signal data [37, 36, 35, 34] and error data [0.1 0.1 0.2 0.1].
@@ Line 72: / Line 76: @@
 Reverses the order of x rows in [[IXTdataset_1d]] or both x columns and y rows in [[IXTdataset_2d]].
 == Arrays of Datasets ==

← Older revision		Revision as of 15:08, 18 March 2008
Line 49:		Line 49:


−	'''Example:'''	+	'''''Example:'''''
−
−
−	~~>> wwout = scale_y(ww, 4)~~

		+	<pre>>> wwout = scale_y(ww, 4)</pre>

	will multiply every y value in wwout by 4		will multiply every y value in wwout by 4

@@ Line 1: / Line 1: @@
 Data manipulation functions change the data in some way, such as scaling or flipping it. The functions available are
 ==Shift Functions==
@@ Line 31: / Line 21: @@
-'''Example:'''
+'''''Example:'''''
 Every x value in wout will have 4 added to them
@@ Line 92: / Line 80: @@
-'''Example:'''
+'''''Example:'''''
->> wout = flip(w)
+<pre>>> wout = flip(w)</pre>
 is equivilent to
+<pre>for i = 1:length(w)
-for i = 1:length(w)
+   wout(i) = flip(w(i))
+end</pre>

@@ Line 102: / Line 102: @@
 for i = 1:length(w)
 <nowiki>   wout(i) = flip(w(i))</nowiki>
 end

← Older revision		Revision as of 16:39, 17 March 2008
Line 86:		Line 86:

	Reverses the order of x rows in [[IXTdataset_1d]] or both x columns and y rows in [[IXTdataset_2d]].		Reverses the order of x rows in [[IXTdataset_1d]] or both x columns and y rows in [[IXTdataset_2d]].
		+
		+	== Arrays of Datasets ==
		+
		+	If an array of dataset objects is passed to the function, then the operation is performed on each dataset in turn.
		+
		+
		+	'''Example:'''
		+
		+
		+	>> wout = flip(w)
		+
		+
		+	is equivilent to
		+
		+
		+	for i = 1:length(w)
		+	wout(i) = flip(w(i))
		+	end