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Reading Renishaw WiRE files

This example shows how to read a Renishaw WiRE files (.wdf format).

The spectral data used has been downloaded from https://github.com/alchem0x2A/py-wdf-reader (MIT License) and stored in the local directory ramandata/wire.

The examples given here is a modified version of the original examples: See https://github.com/alchem0x2A/py-wdf-reader/blob/master/examples

Import the package

import spectrochempy as scp

Read a single spectrum

dataset = scp.read_wire("ramandata/wire/sp.wdf")
_ = dataset.plot()

Read a depth series

dataset = scp.read_wdf("ramandata/wire/depth.wdf")
_ = dataset.plot(method="image")

Handle diverging colormaps

A diverging colormap is triggered when negative values are present. Enforce a sequential colormap explicitly:

_ = dataset.plot_image(cmap="cividis")

Alternatively, adjust diverging_margin to keep the default colormap:

_ = dataset.plot(method="image", diverging_margin=0.1)

Filter blank spectra

import numpy as np

keep_rows = np.where(dataset.data.mean(axis=1) > 0)[0]
dataset = dataset[keep_rows]
_ = dataset.plot_image()

Read line scan and grid scan data

Line scan from a StreamLine HR measurement:

dataset = scp.read("ramandata/wire/line.wdf")
_ = dataset.plot_image()

Grid scan data:

dataset = scp.read_wdf("ramandata/wire/mapping.wdf")
_ = dataset.sum(dim=2).plot_image(equal_aspect=True)
_ = dataset[..., 1529.0].plot_image(equal_aspect=True)

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/home/runner/work/spectrochempy/spectrochempy/src/spectrochempy/core/readers/read_wire.py:198: UserWarning: Map area type is not specified, will assume a xy (column major) scan for the mapping data.
  warning_(

This ends the example ! The following line can be uncommented if no plot shows when running the .py script with python

# scp.show()