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SurView Tutorial

Flight lines (SLD files)

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Display options

There are 3 distinct views that can be obtained from an SLD (Survey Line Data) file:
flight lines
flight lines
profile map
profile map
stacked profiles
stacked profiles

Each of these types of displays of SLD data has specific attributes for it, as described below.


Flight line map

flight line attributes
flight line attributes
From the Edit | Display attributes... dialog box, the SLD line attributes dialog box provides a way to change colour and line style of the flight lines. The flight line display can also be enabled or disabled here.

flight line display options
flight line options

A variety of flight line options can be selected using the Options | Flight lines dialog box:



Profile map
flight lines
profile map

A profile map is a 2D map that is a combination of a flight map and a stacked profile display. In effect, the profile data for the variable is 'flopped over' on its side so it is drawn in the plane of the map. This type of map is useful for electrical and magnetic data and shows the crossovers and peaks very well. It is less useful for airborne gamma-ray spectrometry, which is noisier and which exhibits less peak correlation between adjacent lines.

flight & profilemap attributes
flight line & profile
map attributes

In addition to line colour & style, the scale factors can be adjusted for each variable being plotted as a profile map.

The lines selected for drawing the profile map follow the same rules currently in effect for drawing flight lines (forward/reverse, odd/even, etc).


profile map filters
profile map filters

The data used for the profile map can be filtered to enhance the display.

flight map with symbols
flight map with symbols
SLD symbol map
In addition to the pseudo-contour effect created by the profile map, a variable-size symbol map can also be made for each variable. This uses the same symbol scaling methods used for geochemical data in .BOB files.

SLD symbol attributes
SLD symbol attributes

Select the variables for which symbols are to be drawn, and set the symbol type & colours.

SLD symbol scale factors
SLD symbol scale factors

Then select Scale to set the scale factors.


Stacked profiles

select flight line from list
select a flight line
from the list

There are 2 ways to select a flight line for which to view stacked profile data:


stacked profiles
stacked profiles

For each flight line selected, a new window will be created to show the stacked profile data for that line. The stacked profile window has a different set of menu options than the map window, to access the unique attributes of the stacked profile display.

stacked profile attributes
stacked profile attributes

There is a separate set of scale factors, line colours & styles for the stacked profile data.

filters & drawing modes
filters & drawing modes

A separate set of filters and plotting methods can be applied to the stacked profile data.

axes attributes
axes attributes

The colours & styles of the stacked profile axes and labels can also be changed.

order of variables
order of variables

The drawing order (top to bottom) of the variables in the stacked profile display can be changed and the graphs of 1 or more variables can be superimposed.

superimposed variables
superimposed variables

The stacked profile method of displaying several variables, coupled with these display attributes provides a very powerful tool for correlating data sets consisting of several variables.


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