Difference between revisions of "Geopsy: H/V and Spectrum Results"

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The results are obtained after adjusting the windowing and processing parameters in the [[Geopsy: H/V and Spectrum Toolboxes|H/V and Spectrum Toolboxes]].
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The results are obtained after adjusting the windowing and processing parameters in the [[Geopsy: H/V and Spectrum Toolboxes|H/V or Spectrum Toolbox]].
−
 
 
  
  
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= '''H/V graph''' =
+
= '''Curve graph''' =
−
 
 
  
 
[[Image:HV_RESULTS_HV_curve1.png|thumb|right|200px|H/V curve]]
 
[[Image:HV_RESULTS_HV_curve1.png|thumb|right|200px|H/V curve]]
  
−
The H/V graph shows:
+
The curve graph shows:
−
* individual H/V curves from the selected windows, with the color of the corresponding window in the signal sheet (provided ''All window'' of the ''H/V options'' in [[Geopsy: Preferences|preferences]] has been selected
+
* individual curves from the selected windows, with the color of the corresponding window in the signal sheet (provided ''All window'' of the ''H/V options'' or ''Spectrum options'' in [[Geopsy: Preferences#Preference tab for plugins|Preferences]] has been selected
−
* the average H/V curve (black line)
+
* the average curve (black line)
 
* the amplitude standard deviation curves (dashed lines)
 
* the amplitude standard deviation curves (dashed lines)
−
* the H/V peak frequency standard deviation domains (the two vertical gray areas)
+
* the peak frequency standard deviation domains (the two vertical gray areas)
  
  
−
The frequency of the H/V peak is at the limit between the two gray areas.
+
The peak frequency is the value at the limit between the two gray areas.
  
−
'''Note:''' it may happen that the limit between the two gray areas does not coincide with the top of the curve peak, as the H/V curve is the average of all the curves from the individual windows, while the peak frequency value is obtained by averaging the frequency of the peak of all the curves from the individual windows.
+
'''Note:''' the limit between the two gray areas and the top of the average curve peak are obtained in two different ways:
  
 +
- the average curve is obtained by averaging all the curves from the individual windows
  
−
The name of the receiver appears above the top right corner of the H/V graph.
+
- the average peak frequency is obtained by averaging the peak frequency of all the curves from the individual windows.
  
−
'''Note:''' the name of the graph and the graph are not grouped. In order to move the two of them, it is necessary to select them both.
+
It may thus occur that they do not coincide.
  
−
<br style="clear: both"/>
 
  
−
[[Image:HV_RESULTS_HV_curve2.png|thumb|right|200px|Average H/V curve]]
+
The name of the receiver appears above the top right corner of the curve plot.
 +
 
 +
'''Note:''' the name of the station and the graph are not grouped. Both of them must be selected so as to move the two of them together.
  
−
If the item '''All window''' of the '''H/V options''' in [[Geopsy: Preferences|preferences]] has not been selected the color curves do not appear
 
 
<br style="clear: both"/>
 
<br style="clear: both"/>
  
 +
[[Image:HV_RESULTS_HV_curve2.png|thumb|right|200px|H/V average curve without individual curves]]
 +
 +
If the item '''All windows''' of the '''H/V options''' or '''Spectrum options''' in [[Geopsy: Preferences#Preference tab for plugins|Preferences]] has not been selected the color curves do not appear
 
<br style="clear: both"/>
 
<br style="clear: both"/>
  
 +
= '''Curve parameters''' =
 
[[Image:HV_RESULTS_HV_hv_box_results.png|thumb|right|200px|H/V parameters]]
 
[[Image:HV_RESULTS_HV_hv_box_results.png|thumb|right|200px|H/V parameters]]
  
−
To get the H/V curve parameters, move the cursor into the graph or the graph title. A small pale yellow pop-up window appears with:
+
The curve parameters are displayed in a small pale yellow pop-up window when moving the cursor into the graph or into the graph title in which are indicated:
 
* the receiver name.
 
* the receiver name.
 
* the peak frequency value with its standard deviation. This value is the limit between the two gray areas, not the value of the average curve peak.
 
* the peak frequency value with its standard deviation. This value is the limit between the two gray areas, not the value of the average curve peak.
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A bright yellow pop-up window also appears to give the coordinates of the place where the cursor points to.
 
A bright yellow pop-up window also appears to give the coordinates of the place where the cursor points to.
 +
 
<br style="clear: both"/>
 
<br style="clear: both"/>
−
 
+
[[Image:HV_RESULTS_HV_boxes_results_cursor_.png|thumb|right|250px|Parameter box and cursor position (X,Y)]]
−
= '''H/V graph tools''' =
+
Both windows may appear together on the graph.
−
[[Image:HV_RESULTS_HV_tools.png|thumb|right|200px|H/V graph tools]]
 
−
 
 
−
With a right-click '''outside''' the H/V graph a pop-up menu appears (this menu is also present at the top of the window when running geopsy under Windows or Linux).
 
−
 
 
−
 
 
−
The menu items are described in the figue reference manual, except '''Tools''', a geopsy specific feature described here below.
 
−
 
 
 
<br style="clear: both"/>
 
<br style="clear: both"/>
  
  
−
The Item Tools includes six sub-items:
+
Graph parameters may be [[Geopsy: H/V and Spectrum Toolboxes: Output Tab | '''customized''']], and its appearance modified by using a [[SciFigs: Make-up|'''Make-up''']].
−
==== Load results ====
 
−
Load a H/V curve which results are stored in a '''.hv'' file ([[Geopsy: H/V_output_file|Example]])
 
−
==== Save results ====
 
−
Save the H/V curve in a '''.hv''' file ([[Geopsy: H/V_output_file|Example]])
 
−
==== Edit peaks ====
 
  
−
The H/V peak is automatically selected as the point with the maximal amplitude. It may thus not be the real peak of interest. The '''Edit''' item allows to change the peak, to add one or several other peaks, or to remove the peak.
+
= '''Graph menu''' =
 +
[[Image:HV_RESULTS_HV_tools.png|thumb|right|200px|Graph tools]]
  
−
Main article: [[Geopsy: Edit peaks|Edit peaks]]
+
With a right-click '''outside''' the graph a pop-up menu appears (this menu is also present at the top of the window when running geopsy under Windows or Linux).
  
 +
*[[SciFigs:_Graphic_Sheet_Menu#File | '''File''']]
 +
*[[SciFigs:_Graphic_Sheet_Menu#Edit | '''Edit''']]
 +
*[[SciFigs:_Graphic_Sheet_Menu#Insert | '''Insert''']]
 +
*[[SciFigs:_Graphic_Sheet_Menu#Format | '''Format''']]
  
−
The next three sub-items make more sense to be used when computing several H/V curves (see next section):
+
*[[Geopsy: _Graph_Tools|'''Tools''']]
  
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==== Statistical comparison ====
+
Only '''Tools''' is a geopsy specific feature. The other items are described in the [[SciFigs:_Graphic_Sheet_Menu|Graphic Sheet menu]] reference manual.
−
==== Set categories ====
+
−
==== Categories to group ====
+
<br style="clear: both"/>
  
  
 +
= '''Processing several stations''' =
 +
When processing several (at least two) stations, results appear in two Graphic Sheets:
  
−
<br style="clear: both"/>
+
* a window with all individual curves
  
 +
* a window with a summary
  
−
= '''Processing several receivers''' =
+
It is possible [[#Reprocess | reprocess]] some or all receivers.
−
When processing several (at least two) H/V curves, the results appear in two windows:
 
−
 
 
−
* a window with all individual H/V curves
 
  
−
* a window with a summary
 
  
  
 +
== Individual curves ==
  
−
== Individual H/V curves ==
+
For a description of the individual curves see [[#Curve_graph | '''Curve graph''']]
  
−
For a description of the individual H/V curves see [[#H.2FV_graph | H/V graph]]
 
  
 
[[Image:HV_RESULTS_HV_curves.png|thumb|right|300px|Individual H/V curves]]
 
[[Image:HV_RESULTS_HV_curves.png|thumb|right|300px|Individual H/V curves]]
  
 
<br style="clear: both"/>
 
<br style="clear: both"/>
 +
The curve graph(s) appearance may be [[Geopsy: H/V and Spectrum Toolboxes: Output Tab | '''customized''']].
  
 
== H/V summary ==
 
== H/V summary ==
 
The summary window includes
 
The summary window includes
−
* two graphs summarizing the H/v curves
+
* two graphs summarizing the curves
  
 
* a frequency-distance graph with color-coded amplitude along a profile  
 
* a frequency-distance graph with color-coded amplitude along a profile  
  
−
* a map showing the distribution of the H/V sites in a geographical system
+
* a map showing the distribution of the stations in a geographical system
  
−
'''Note''': the two maps appear only if coordinates of the H/V sites have been entered in the data base
+
'''Note''': the two maps appear only when the coordinates of the sites have been entered in the data base
  
  
−
==== H/V curves ====
+
=== Summary curves ===
−
Two graphs summarizing the individual H/V curves appear at the top of the window:
+
Two graphs summarizing the individual curves appear at the top of the window:
−
* all individual H/v curves drawn together
+
* individual curves all together
−
* the individual H/V curves are averaged and presented as a single H/V curve, with the amplitude and frequency standard deviations, as for individual H/V curve
+
* a single curve showing the average of all individual curves, with amplitude and frequency standard deviations
  
−
[[Image:HV_RESULTS_HV_summary.png|thumb|right|300px|H/V summary of the eight single curves presented above]]
+
[[Image:HV_RESULTS_HV_summary.png|thumb|right|300px|H/V summary curves of the above eight single curves]]
  
 
<br style="clear: both"/>
 
<br style="clear: both"/>
  
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==== Map ====
+
=== Map ===
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When the receiver coordinates are included in the data base, a geographical map is displayed. The default map displays the receivers with a frequency color coded symbol and the receiver name.
+
When the receiver coordinates are included in the data base, a geographical map is displayed.
 +
 
 +
Each location is characterized by three items:
 +
 
 +
* a '''symbol''' at the location of the point
 +
* a '''color bubble''', scaled to the parameter (frequency or amplitude) shown on the map
 +
* a '''label''', which is either the parameter (frequency or amplitude) value, the station name, or which can be omitted
 +
 
 +
In the default map the receivers are displayed with a frequency color bubble and the receiver name.
 
   
 
   
 
[[Image:HV_RESULTS_HV_map.png|thumb|right|300px|Geographical distribution of the receivers with color coded frequency symbols and receiver names]]
 
[[Image:HV_RESULTS_HV_map.png|thumb|right|300px|Geographical distribution of the receivers with color coded frequency symbols and receiver names]]
 
<br style="clear: both"/>
 
<br style="clear: both"/>
  
−
The display parameters may be changed with the pop-up '''Map options''' sub-item in the '''Tools''' item of the the pop-up menu obtained with a right click '''outside''' the map.
 
 
[[Image:HV_RESULTS_HV_map_tools.png|thumb|right|200px|Sub-item Map options]]
 
[[Image:HV_RESULTS_HV_map_tools.png|thumb|right|200px|Sub-item Map options]]
 +
The display parameters may be changed with the pop-up [[Geopsy: _Map_Options|'''Map options''']] sub-item in the '''Tools''' item of the the pop-up menu obtained with a right click '''outside''' the map.
 +
 
<br style="clear: both"/>
 
<br style="clear: both"/>
  
−
The '''Map options''' pop-up window appears with the display parameters.
+
= '''Reprocessing some or all stations''' =
−
 
+
[[Image:HV_RESULTS_HV_StationsSelected.png|thumb|right|400px|Selected H/V curves to be reprocessed (Stations 003 and 010)]]
−
[[Image:HV_RESULTS_HV_map_options1.png|thumb|right|200px|Map display options]]
 
−
 
 
−
 
 
−
* ''' Peak Selection '''
 
−
If there are more then one peak on the H/V curve, there are four possibilities for choosing the peak value to be displayed, corresponding to:
 
−
 
 
−
- the peak number, according to the peak position along the curve
 
−
 
 
−
- the peak with the lowest frequency
 
  
−
- the peak with the highest frequency
 
  
−
- the peak with the highest amplitude, regardless of its frequency and position in the curve
+
Select the curves to be re-processed and change the parameters in the [[Geopsy: H/V and Spectrum Toolboxes|H/V or Spectrum Toolbox]]
−
 
 
−
When only one peak appears on all curves, all possibilities are equivalent, except a '''Peak number''' value greater than 1, which will produce a map with the sole position of the receivers, without any information on the peak values (color or label).
 
−
 
 
−
* ''' Peak Value'''
 
−
 
 
−
* ''' Label'''
 
−
Indicates how the receiver locations are labeled:
 
−
 
 
−
- Station name: the name used in geopsy for the receiver.
 
−
 
 
−
- Peak value: the frequency or amplitude of the peak that have been chosen in the '''Peak selection''' section, with the number of decimals set in the '''Decimals''' box.
 
−
 
 
−
- No label: nothing is written on the map.
 
  
  
 +
Selecting no curve or all curves have the same effcet: all curves will be re-processed.
 
<br style="clear: both"/>
 
<br style="clear: both"/>
  
−
For example, when '''Frequency''' in the '''Peak value''' section is selected, the peak frequency values replace the receiver name next to the frequency color coded symbol.
 
−
[[Image:HV_RESULTS_HV_map_freq1.png|thumb|right|300px|Geographical distribution of the receivers with color coded frequency symbols and frequency values]]
 
  
−
<br style="clear: both"/>
+
[[Image:HV_RESULTS_HV_StationsToBeReprocessed.png|thumb|right|300px|Partial re-processing dialog box]]
  
−
* If the '''Show colored bubbles''' box is not checked, only the symbols and the label at the receiver locations are shown.
+
No dialog box appears when all stations are re-processed.  
−
[[Image:HV_RESULTS_HV_map_sans_couleurs.png|thumb|right|300px|Map display options]]
 
  
−
<br style="clear: both"/>
+
When only some of the stations are selected, a dialog box appears with the following options:
  
−
= '''H/V graph tools when processing several receivers''' =
+
- '''Selection''': re-process only the stations listed in the dialog box
  
−
After selecting one or several curves, with a right-click '''outside''' the H/V graph a pop-up menu appears (this menu is also present at the top of the window when running geopsy under Windows or Linux).
+
- '''All''': re-process all stations of the current processing
  
−
The first three items of the menu are described in [[#H.2FV_graph_tools|H/V graph tools]]
 
−
 
−
The next items are useful only when several H/V curves are processed
 
−
 
−
 
−
==== Statistical comparison ====
 
−
After selecting the '''Statistical comparison''' tool, a pop-up windows appears, to select the curves to compare.
 
−
 
−
There is no need to select individual graphs when using this item . All graphs appear in the selection window, whether or not graphs have been selected.
 
−
[[Image:HV_RESULTS_TOOLS_comparison3.png|thumb|right|200px|Statistical H/V comparison selection window]]
 
−
<br style="clear: both"/>
 
  
−
If no or only one graph has been selected, a warning pop-up window appears and the process is abandoned.
 
−
[[Image:HV_RESULTS_TOOLS_no_graph_selected.png|thumb|right|150px|Only one or no H/V graph has been selected in the selection window]]
 
 
<br style="clear: both"/>
 
<br style="clear: both"/>
−
==== Set categories ====
 
−
==== Categories to group ====
 

Latest revision as of 14:21, 11 March 2013

H/V and Spectrum results are the same, except for:

  • the labeling of the Y-axis
  • the default number of individual curves (1 in the H/V case; 3 in the spectrum case)

The examples shown here below in this are based on H/V results

For the Spectrum results, simply replace H/V by Spectrum when reading the notice.


The results are obtained after adjusting the windowing and processing parameters in the H/V or Spectrum Toolbox.


Signal and selected windows

Signal and selected windows before processing

After applying the windowing selection criteria, the selected windows appear in green on the signal sheet.

Signal and selected windows before processing

After processing, each selected windows appear with its own color on the signal sheet.


Curve graph

H/V curve

The curve graph shows:

  • individual curves from the selected windows, with the color of the corresponding window in the signal sheet (provided All window of the H/V options or Spectrum options in Preferences has been selected
  • the average curve (black line)
  • the amplitude standard deviation curves (dashed lines)
  • the peak frequency standard deviation domains (the two vertical gray areas)


The peak frequency is the value at the limit between the two gray areas.

Note: the limit between the two gray areas and the top of the average curve peak are obtained in two different ways:

- the average curve is obtained by averaging all the curves from the individual windows

- the average peak frequency is obtained by averaging the peak frequency of all the curves from the individual windows.

It may thus occur that they do not coincide.


The name of the receiver appears above the top right corner of the curve plot.

Note: the name of the station and the graph are not grouped. Both of them must be selected so as to move the two of them together.


H/V average curve without individual curves

If the item All windows of the H/V options or Spectrum options in Preferences has not been selected the color curves do not appear

Curve parameters

H/V parameters

The curve parameters are displayed in a small pale yellow pop-up window when moving the cursor into the graph or into the graph title in which are indicated:

  • the receiver name.
  • the peak frequency value with its standard deviation. This value is the limit between the two gray areas, not the value of the average curve peak.
  • the peak amplitude with its standard deviation. In case of several peaks, all frequencies and amplitudes are shown.
  • the category of the curve, which has been defined by the operator (see next section). This parameter is more useful when several H/V curves are processed.


Cursor position (X,Y)

A bright yellow pop-up window also appears to give the coordinates of the place where the cursor points to.


Parameter box and cursor position (X,Y)

Both windows may appear together on the graph.


Graph parameters may be customized, and its appearance modified by using a Make-up.

Graph menu

Graph tools

With a right-click outside the graph a pop-up menu appears (this menu is also present at the top of the window when running geopsy under Windows or Linux).

Only Tools is a geopsy specific feature. The other items are described in the Graphic Sheet menu reference manual.



Processing several stations

When processing several (at least two) stations, results appear in two Graphic Sheets:

  • a window with all individual curves
  • a window with a summary

It is possible reprocess some or all receivers.


Individual curves

For a description of the individual curves see Curve graph


Individual H/V curves


The curve graph(s) appearance may be customized.

H/V summary

The summary window includes

  • two graphs summarizing the curves
  • a frequency-distance graph with color-coded amplitude along a profile
  • a map showing the distribution of the stations in a geographical system

Note: the two maps appear only when the coordinates of the sites have been entered in the data base


Summary curves

Two graphs summarizing the individual curves appear at the top of the window:

  • individual curves all together
  • a single curve showing the average of all individual curves, with amplitude and frequency standard deviations
H/V summary curves of the above eight single curves


Map

When the receiver coordinates are included in the data base, a geographical map is displayed.

Each location is characterized by three items:

  • a symbol at the location of the point
  • a color bubble, scaled to the parameter (frequency or amplitude) shown on the map
  • a label, which is either the parameter (frequency or amplitude) value, the station name, or which can be omitted

In the default map the receivers are displayed with a frequency color bubble and the receiver name.

Geographical distribution of the receivers with color coded frequency symbols and receiver names


Sub-item Map options

The display parameters may be changed with the pop-up Map options sub-item in the Tools item of the the pop-up menu obtained with a right click outside the map.


Reprocessing some or all stations

Selected H/V curves to be reprocessed (Stations 003 and 010)


Select the curves to be re-processed and change the parameters in the H/V or Spectrum Toolbox


Selecting no curve or all curves have the same effcet: all curves will be re-processed.


Partial re-processing dialog box

No dialog box appears when all stations are re-processed.

When only some of the stations are selected, a dialog box appears with the following options:

- Selection: re-process only the stations listed in the dialog box

- All: re-process all stations of the current processing



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