2. dataArray¶
dataArray contain a single dataset.
- ndarray subclass containing matrix like data
- attributes are linked to the data e.g. from a measurement or simulation parameters.
- all numpy array functionality preserved as e.g. slicing, index tricks.
- fit routine
- read/write in human readable ASCII text including attributes.
dataArray creation can be from read ASCII files or ndarrays as js.dA(‘filename.dat’).
See dataArray
for details.
Example:
#create from array or read from
import jscatter as js
import numpy as np
x=np.r_[0:10:0.5] # a list of values
D,A,q=0.45,0.99,1.2
data=js.dA(np.vstack([x,np.exp(-q**2*D*x),np.random.rand(len(x))*0.05])) # creates dataArray
data.D=D;data.A=A;data.q=q
data.Y=data.Y*data.A # change Y values
data[2]*=2 # change 3rd column
data.reason='just as a test' # add comment
data.Temperature=273.15+20 # add attribut
data.savetxt('justasexample.dat') # save data
data2=js.dA('justasexample.dat') # read data into dataArray
data2.Y=data2.Y/data2.A
The dataarray module can be run standalone in a new project.
2.1. Attributes¶
Array columns can be accessed as automatic generated attributes like .X,.Y,.eY (see protectedNames).
Corrsponding column indices are set by dataArray.setColumnIndex()
(default X,Y,eY = 0,1,2).
Attributes can be set like: data.aName= 1.2345
protectedNames |
dataArray.showattr |
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dataArray.attr |
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dataArray.getfromcomment |
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dataArray.extract_comm |
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dataArray.resumeAttrTxt |
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dataArray.setattr |
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dataArray.setColumnIndex |
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dataArray.name |
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dataArray.array |
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dataArray.argmax |
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dataArray.argmin |
2.2. Fitting¶
dataArray.fit |
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dataArray.modelValues |
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dataArray.setLimit |
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dataArray.hasLimit |
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dataArray.setConstrain |
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dataArray.hasConstrain |
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dataArray.makeErrPlot |
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dataArray.makeNewErrPlot |
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dataArray.killErrPlot |
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dataArray.detachErrPlot |
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dataArray.showlastErrPlot |
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dataArray.savelastErrPlot |
2.3. Housekeeping¶
dataArray.savetxt |
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dataArray.isort |
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dataArray.where |
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dataArray.prune |
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dataArray.merge |
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dataArray.concatenate |
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dataArray.interpolate |
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dataArray.interpAll |
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dataArray.interp |
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dataArray.polyfit |
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dataArray.addZeroColumns |
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dataArray.addColumn |
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dataArray.nakedCopy |