RosePlot Program for ArcGIS User Guide by mbl19456

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									Rose Plot Guide (ArcGIS 9.2)                                                                                                  Page - 1
GeoTech@batelco.com.bh                                                                                                            1/24/2009
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                          RosePlot Program for ArcGIS

                                                     User Guide
                                                            Version 2.2

                                                      geotech@batelco.com.bh
                                                             +97317217403




                                                        Table of Content

Quick Start Guide ......................................................................................................................2
    1       Rose Plots - Statistical Analysis Tool ............................................................................5
    2       Parameter Overview ......................................................................................................6
    3       Feature Counts...............................................................................................................7
    4       Display Rose Plot Results in ArcMap............................................................................8
    5       Advanced Rose Plot Colouring in ArcMap..................................................................10
    6       Rose Plots with Annotations ........................................................................................12
    7       Calculation Parameters - More Details ....................................................................15
    Rose Plot Guide (ArcGIS 9.2)                                                                                 Page - 2
    GeoTech@batelco.com.bh                                                                                          1/24/2009
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                                                 Quick Start Guide
    Step 1: Select feature class in ArcMap Open an ArcMap session. In the RosePlot 2.2 toolbar select
                the layer from which the rose plots should be created. Only line or polyline layers/features can be
                selected.

    Step 2: Select features: For the selection of the feature(s) standard ArcMap selection tool can be used
                (e.g. by attribute, by region, by individual selection, or by using query options). Optionally all features
                in the view extend, or all features in the layer file can be used for the calculation.

    Step 3: Start RosePlot module by clicking on icon (Red circle)




1
                                                                                               3
                                                 2




    Step 4: Click “Generate
          Plot”

    Step 5: “Save To ArcMap”

    Use this option to display/import
    the created rose plot as vector
    file into the open ArcMap
    session.

    Optionally customised
    parameters can be selected see
    explanations in this guide.

    NOTE: Calculation time
    increases with smaller Grid Size,
    smaller Petal Width and the
                                                                 4
    Segment Strike option turned on.
                                                                 5
Rose Plot Guide (ArcGIS 9.2)                                                                           Page - 3
GeoTech@batelco.com.bh                                                                                    1/24/2009
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Display example using
default settings in
RosePlot.




Display example using
customized settings in
RosePlot.
Rose Plot Guide (ArcGIS 9.2)                                                                           Page - 4
GeoTech@batelco.com.bh                                                                                    1/24/2009
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                         RosePlot Program for ArcGIS

                                           User Guide
Rose Plot Guide (ArcGIS 9.2)                                                                           Page - 5
GeoTech@batelco.com.bh                                                                                    1/24/2009
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1 Rose Plots - Statistical Analysis Tool

The tool creates strike trend diagrams or rose plots for Faults and Folds (or any other line or polyline
feature), which can be displayed on maps within a GIS environment. These can aid in determining
e.g. average fracture orientations and paleo-stress trends. In addition, a fault density distribution
display can be created.




The rose plots can be stored as a feature in the GIS database. The geologist can customize the
calculation of the rose plots based on pre-defined parameters. ArcGIS symbology functions allow
further customisation, such as colour appearance, directional colour coding, transparency or
annotations.
Rose Plot Guide (ArcGIS 9.2)                                                                                         Page - 6
GeoTech@batelco.com.bh                                                                                                 1/24/2009
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2 Parameter Overview

Two steps are required for creating rose plots within the ArcGIS environment: (1) select the features
to be analysed in ArcMap and set the calculation parameters, (2) create the rose plots and display
these in ArcMap. Optionally the display of the rose plots can be adjusted (colours & annotations).


RosePlot 2.2: Parameter Selection
                                                                  Grid Size                       Grid size

                                                                          o
                                                                       24 N
  Petal Width                       Petal width in
                                       degrees

                                                                  N      23
                                                                              o

                                                                                            12o               13oE




  Strike                  Strike: Average
                          (& Length weighted)



  Feature



                          Strike: Segment
                          (& Length weighted)




  Weighted                Length weighted




           4 Features    Frequency weighted




                          Feature Count:          Displays            Rotate:       Generates rose
                          number of features of rose plot(s) as       plot(s) rotated by 90 degrees.
                          annotation when exporting to ArcMap.
Rose Plot Guide (ArcGIS 9.2)                                                                           Page - 7
GeoTech@batelco.com.bh                                                                                     1/24/2009
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3 Feature Counts

If the “Feature Count“ option is ticked (see red arrow below) prior to generating the plot it is now
possible to display:

         (i) the number of features calculated in each grid block; or
         (ii) the number of feature representing each petal.


(A) Right click on the
display window and select
from the pop-up window,                                  (A)
which feature count
should be displayed.

(B) With the mouse icon
hover over the display area
of interest and the feature
count is displayed.




                                   .    .
                                                                                     No. of Feature: 17
                                                                                                     (B)
Rose Plot Guide (ArcGIS 9.2)                                                                           Page - 8
GeoTech@batelco.com.bh                                                                                    1/24/2009
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4 Display Rose Plot Results in ArcMap


Step 1: Click on “Add to ArcMap” (black circle) to transfer rose plot data to your current ArcMap
       session.


Note: The original shape
file name has a coded
extension to reflect the
parameter settings of the
 rose plot.
Rose Plot Guide (ArcGIS 9.2)                                                                           Page - 9
GeoTech@batelco.com.bh                                                                                    1/24/2009
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Step 2: Adjust the colour of rose
        plots by double clicking on
        colour box in table of
        contents and opening the
        “Symbol Selector”




Step 3:
Select desired colour and click
OK.
Rose Plot Guide (ArcGIS 9.2)                                                                          Page - 10
GeoTech@batelco.com.bh                                                                                    1/24/2009
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5 Advanced Rose Plot Colouring in ArcMap




Step 1:
For advanced rose plot colouring options
right click on the rose plot layer and
choose “Properties”.




Step 2:
On the symbology tab
choose “Categories”.
Rose Plot Guide (ArcGIS 9.2)                                                                          Page - 11
GeoTech@batelco.com.bh                                                                                    1/24/2009
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Step 3:

Under “Categories” choose
“Unique Values”.

Next choose as “Value Field”
“Degrees”.

Next select a colour scheme.

Next click “Add All Values”

Click OK.




Use additional display
or symbology options
in ArcMap to adjust
the rose plots colour if
required.




                                                     Example of ArcMap categories
                                                     symbology display using colouring
                                                     related to strike.
Rose Plot Guide (ArcGIS 9.2)                                                                          Page - 12
GeoTech@batelco.com.bh                                                                                     1/24/2009
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6 Rose Plots with Annotations


To display the number of features for each rose plot in ArcMap
follow this procedure:                                                     Annotation showing number of
                                                                           features represented in rose plot.

Step 1: When creating the rose plots in the RosePlot module make sure the options “Feature Count
       is selected.




Step 2: Right click on the
annotation layer of the rose
plots (ends with _anno) and
choose “Properties” (right
mouse click).
Rose Plot Guide (ArcGIS 9.2)                                                                          Page - 13
GeoTech@batelco.com.bh                                                                                    1/24/2009
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Step 3: On the
Label tab tick
“Label Features
in this layer”.

   Next set the
   label field to
   “Value ”.

   Click OK.




Step 4: Labels are
now placed in the
centre of the rose
diagrams.




Step 5: To move the
labels right click on
annotation layer and
select “Convert
labels to
Annotations”.
Rose Plot Guide (ArcGIS 9.2)                                                                          Page - 14
GeoTech@batelco.com.bh                                                                                    1/24/2009
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Step 6: Tick “in the map” option.
       Click convert.




Step 7: In ArcMap insert the drawing
          toolbar.




Step 8: Use the “Select Element pointer” of the drawing toolbar to select the annotations one-by-one
or as a group (hold down the “Shift” key during selection to select more than one annotation).

                                                                   Step 9: Drag the annotations to the
                                                                           required position.
Rose Plot Guide (ArcGIS 9.2)                                                                             Page - 15
GeoTech@batelco.com.bh                                                                                         1/24/2009
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7 Calculation Parameters - More Details


The calculation parameters for rose plots allow the adjustment of the way
rose plots are calculated or displayed. In many instances these parameters
need to be adjusted to give statistically or visually meaningful results. The
following parameters are available to change the appearance of the rose plot
output:

      •     Grid Size
      •     Petal Width
      •     Strike
      •     Weighted
      •     Rotate

The “Feature count” option creates a file containing the number of features
represented in each of the rose plots.

The “Save as File” option creates ArcGIS shape files, which can be loaded
into ArcMap for display with other data. Both the rose plots and the
annotations are saved if the “Yes” option is activated.




                                                                   Feature count
              ArcMap                                               annotation
              display
              option




In the following paragraphs each of the geometrical rose plot parameters is
discussed in more detail.


The “Grid Size” parameter selects the grid size for
which individual rose plots will be calculated. For                  Grid Size                   Grid size
example, a grid size of 1 degree calculates the strike of
all features (such as Faults or Folds) contained within a                  24oN
one-degree geographical grid.

If the selected features are spread across more than
one grid area, a rose plot for each of the grid areas is                  23o
                                                                    N              11o     12o          13oE
calculated. The user can choose between 0.1, 0.5, 1,
and 2 degrees grids. In addition one rose plot can be
created for all selected features (“all in one” option).
Rose Plot Guide (ArcGIS 9.2)                                                                            Page - 16
GeoTech@batelco.com.bh                                                                                     1/24/2009
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The “Petal Width” or angular bin size parameter defines the width of the bins. The user can choose 1,
5, 10, 15, 20 and 30 degrees.
                                                                           Petal width in
                                                                              degrees
                                            Petal Width




The “Strike” parameter has two options: either “Segment” or “Average”. This refers to the way the
strike of each individual feature is calculated. Choosing “Segmented” results in the calculation of the
strike of each segment of one feature (obviously only applicable to polyline feature) and displaying it
in the rose plot. The option “Average” calculates the average strike of each feature, by ‘connecting’
beginning and end of the feature.


                                                                                  Strike: Average
                                                                                  (& Length weighted)


                                                            Rose Plot

                                                                                        Feature
                         Feature


                                                                              Strike: Segmented
                                                                              (& Length weighted)
                                                          Rose Plot




The “Weighted” parameter has two options: “Frequency” weighted and “Length” weighted. In
frequency-weighted plots the strike of each feature is represented as one value (each feature counts as
1). In the length-weighted option each feature is proportionally weighted according to its length.




                                                                                       Length
                                                                                       weighted
                                                                      Rose Plot




                               4 Features                                               Frequency
                                                                                        weighted

                                                                      Rose Plot




The “Rotate” parameter optionally rotates the resulting plot by 90 degrees.

								
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