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Just
released!
The brand-new, top-modern
successor software for Spekwin32
Spectragryph
1.0
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Plot/Options
menu
1.
Menu Item [Configuration]
- Here you
can change and set permanently many program options.
- The settings
are written to the file spekwin32.ini in the program folder. Write access
is needed for this file!
- During
program start, these settings are read from the file. Without write
access, the settings can be read but not written. It is recommended
to install Spekwin32 to a folder with write access
- With [allow
multiple instances] activated, it is not advised to load many spectra
at once by double clicking within the file explorer. This will open
as many Spekwin32 windows as files were selected, which might slow down
system performance in an unpleasant way!
3.
Menu Item [Show
Peak Labels]
- Activation
of this menu item will bring up an additional menu bar for all the options
connected with the automated peak labeling feature.
- Show label
allows to use x or y values or both combined as peak label.
- Threshold
defines the mimimum value for labeled peaks. It's a percental threshold,
cal-cualated for each spectrum individually.
- Prominence
is a parameter that allows fine-tuning the selection of peaks for labeling.
Works similar to the "topographic prominence" parameter used
to describe mountain tops.
- With Digits,
you can adjust the number precision of the displayed values.
- The angle
of the label text can be varied between all angles from vertical to
horizontal.
- You can
either label peaks for all spectra or select a single one.
- Hint:
There is no way to individually label peaks!
4.
Menu Item [Show
Spectroscope View]
- The "Spectroscope
View" tries to reproduce the visual appearance of the measured
sample viewed through a hand spectroscope. These are still in wide use
in some industries, especially with gemologists. It might provide helpful
to reduce the gap between visual and spectrometric methods. This feature
works for absorbance or transmittance spectra as well as for emission
spectra.
- Activation
of this menu item will show an additional menu bar below the plot for
all the options connected to the Spectroscope View. A fully blown "rainbow
spectrum" is shown, with reduced brightness according to the selected
spectrum's absorbing regions.
- Within
the rainbow spectrum, the wavelength scale can deactivated and the tick
distance changed.
- The coloured
rainbow spectrum can be shown as grayscale representation (For those
with black&white screens and colourless textbooks)
- Align]
causes the upper spectrum plot to be aligned with the lower rainbow
spectrum. Depending on monitor and window size, this may not always
work perfectly
- With [activate],
the modulation of the full rainbow spectrum by the measured spectrum
can be switched on and off. Select the spectrum with the drop down list.
- With [CopyToClipboard]
you can place the current rainbow spectrum into the Clipboard.
- [Save as..]
will save the current rainbow spectrum to the hard disk.
- Hint:
Transmittance values above 1 (which make no sense physically) lead to
distorted colours. Emission spectra should be normalized or kept below
1 for y values, otherwise colors will also be distorted.
5.
Menu
Item [Axes]
for interconversion of different axis types and naming
of axis titles.
- For the
x axis, wavelength, wavenumbers and electron volts
scale can be selected. Wavenumbers and electron volts are proportional
to energy. The following equation holds true if the axis units are nm
and 1/cm:
and
Further: 1eV=8056,5 cm-1
- There is
the option to manually set the x axis boundaries in the [boundaries]
window.
- the y axis
values can be shown as transmittance T, absorbance A,
molar absorption coefficient
and log(absorption coefficient) .
For interconversion, the following equations are used:
A=-logT and A=cd
Additionally, the y type "Reflectance" and "Intensity"
are recognized and handled by Spekwin32.
- For displaying
and
you have to assign a concentration to the spectrum. This can be done
in the menu items [General]
or [Concentration].
- If possible,
the x and y axis types are choosen automatically according to the most
recently opened spectral file.
- The display
of axis titles can be turned off with the option [show Axis Title].
Set your own individual axis title with [Set Axis Title].
- The option
[Alternating Tick Label] will be enabled by default when set in the
menu item [Configuration].
6.
Menu Item [Axes
Font]
- For changing
the font of both axes' tick labels.
7.
Menu Item
[Legend Font]
- For changing
the font of both axis titles and of legend titles.
- Hint:
When choosing very big font sizes, the axes titles and axes labels might
overlap.
8.
Menu Item
[Legend on/off]
- For turning
on and off the display of legend titles.
9.
Menu Item
[Grid on/off]
- For turning
on and off the grid display.
10.
Menu Item
[Secondary x Axis on/off]
- For turning
on and off the complementary second x axis at the upper edge of the
graph.
11.
Menu Item
[Points/Lines]
- For switching
spectral display as points or lines.
12.
Menu Item
[Flip X-Axis]
- For switching
x-Axis direction. Affects only graphics display. Data will be saved
in default direction.
13.
Menu Item
[Standard Lines&Colours]
- For setting
back spectral display to default values. The colours are set to default
order, line width to 1 and line style to "solid".
14.
Menu Item
[Thicker Lines]
- Increase
the line width by one step.
- Possible
range is from 1 to 7.
15.
Menu Item
[Thinner Lines]
- Decrease
the line width by one step.
- Possible
range is from 1 to 7.
16.
Menu Item
[Plot All Black]
- Set the
line colour of all spectra to black.
- To go back,
call the menu item [Standard Lines & Colour] once.
17.
Menu Item
[Cycling Line Types]
- Sets the
line types of all spectra to alternate between "solid", "dotted"
and "dashed".
- To go back,
call the menu item [Standard Lines & Colour] once.
18.
Menu Item
[Display Values]
- Continuously
shows the current x and y value for the spectrum selected in the drop
down list.
- Close with
[Abort].
19.
Menu Item
[Background Colour]
- For changing
the graph's background colour.
- Will not
be plotted, exported or saved, the background remains transparent!
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