Elizabeth North UMCES Horn Point Laboratory Using Surfer 8.0 UMCES HPL May 30, 2006

A.Examples B.Post Maps C.Base Maps D.Contour Maps E.Overlaying Maps Surfer Workshop Based on Golden Software Surfer 8.0 ( 1. Lecture 2. Application to data 3. Group review and discussion Acknowledgements: Steve Suttles, Chris Rilling

A.Examples B.Post Maps C.Base Maps D.Contour Maps E.Overlaying Maps Surfer Workshop Based on Golden Software Surfer 8.0 ( 1. Lecture 2. Application to data 3. Group review and discussion

Base Map A. Examples

Base Map with Post Map A. Examples

Base Map with Classed Post Map A. Examples

Post Map A. Examples

Contour Map A. Examples

Post Map with Contour Map A. Examples

Base Map (blanking) with Contour and Post maps A. Examples

Base Map (bottom) with Contour, Post and Base (blanking) Maps A. Examples

Contour Map (salinity) with Base Map (bottom), Contour (DO), Post and Base (blanking) Maps

A. Examples Animation 576 Contour, Vector, Base, and Classed Post Map Overlays

B. Post Maps

LabelXY Data file characteristics: First row can contain headers. If so, headers must be one word (i.e., no spaces). X,Y and label columns can be in any order Depth/pressure and longitude should be negative values (so maps are oriented correctly) Compatible file formats include excel (.xls), text (.txt,.dat) and comma separated (.csv) files

Creating a Post Map 1.Map > Post Map > New Post Map 2.Select data file Editing a Post Map Right-click on map to select the object and show editing tool bar To change X and Y coordinate data, symbol type, size, and color, and add or format labels, select Properties ~or~ Double click on map to display Properties dialog box ~or~ Single click on post map in Object Manager to select the map, double click to open Properties dialog box B. Post Maps

Editing the Axes of a Post Map (and all other maps) 1.Right-click (or left-double-click) to select axis of choice (two white boxes appear at the ends of the axis when it is selected) 2.Select Properties Add and format axis title Scale and format labels i.Convert negative numbers (depth/longitude) to positive numbers by clicking on “Label Format” button and checking absolute value Change tick mark size and location ~or~ Double click on map to display Properties dialog box ~or~ Single click on post map in Object Manager to select the map, double click to open Properties dialog box

Creating a Classed Post Map 1.Map > Post Map > New Classed Post Map 2.Select data file B. Post Maps Editing a Classed Post Map Select map and open Properties dialog box General tab to chose columns for X and Y coordinate data and column for Z class data Classes tab to change shape/size/color of classed posts

C. Base Maps Base maps can be used to make lines and filled shapes

C. Base Maps Data file characteristics: A Golden Software blanking file (.bln) Columns must be in X, Y order. First row contains information about the file. The first cell contains the number of rows of data in the file (14 in this example), the second cell contains ‘0’ or ‘1’ (to signify an open or closed shape). If you would like to make a shape that can be filled, the last row of data must contain an exact repeat of the data in the second row. This creates a closed shape that can be filled. The example to the left will create either a line or a filled shape. XY

C. Base Maps Creating a Blanking File Make the file using a Surfer worksheet. Paste data into Surfer worksheet, add first row with file information, then save as a Surfer blanking file (.bln). Create batches of blanking files in Scripter Trace boundaries on existing Surfer map. Select a contour or post map and select Map > Digitize. The mouse cursor will turn into cross-hairs. Click on the map and pop-up window of X,Y coordinates will appear. After the boundaries of the file have been delineated, click on the pop-up window and Save As a Surfer blanking file (.bln). Hit ‘escape’ key to exit this mode.

C. Base Maps Creating a Base Map Map > Base Map Open blanking (.bln) file Make sure that the “Areas to Curves” box is NOT selected and click on OK Editing a Base Map Select map and open Properties dialog box On Base Map tab, click on “Line” or “Fill” Buttons to change line properties and fill the blanked area On Limits tab, change coordinates to define the area of the base map that you want to appear On Scale tab, change X/Y dimensions to change the size and shape of the plot

D. Contour Maps Contours can be lines and/or filled.

D. Contour Maps Data file characteristics: Same as Post Map data file characteristics except add a third variable (Z) LabelXY Z

D. Contour Maps Creating a Contour Map 1.Interpolate Data Grid > Data Select data file Chose columns for X, Y, and Z coordinate data Adjust grid line geometry for X and Y data. Avoid over- interpolation (creating detail in contour lines that is finer that the resolution of the data). Rule of thumb: spacing in the X or Y direction should be no smaller than half the distance between measurements Specify name of grid file (.grd) 2.Create Map Map > Contour Map > New Contour Map Open grid (.grd) file

D. Contour Maps Editing a Contour Map Select contour map and open Properties dialog box To fill contours and make a color scale, check boxes under “Filled Contours” in “Options” tab. To change contour line levels, colors, visibility and label formats, click on “Levels” tab i.If you want to use the same levels and color scale for multiple plots, use a level (.lvl) file, a file that contains levels, line and color information ii.Use an existing level file by clicking on the “Load” button. iii.Make a level (.lvl) file by clicking on the “Save” button. To move the contour line labels, select map, right click on it to display options, select Edit Contour Labels. Move labels along lines by clicking and dragging them. Hit ‘escape’ key to exit this mode, or right click and select Edit Contour Labels again.

E. Overlaying Maps

Overlaying Maps Before overlaying maps, name each map by right-clicking on map, selecting Object ID, and typing in a name Select the maps that you wish to overlay by holding down the shift button and left-click on each map Go to Map > Overlay Maps Editing Overlays Use the Object Manager or toggle through the overlays by holding down the ‘Ctrl’ key and left-click on the maps then right-click and select Properties. The Object ID of the selected map will appear in the lower left corner of the Surfer window, and will be highlighted in the Object Manager. To change to order of the maps within the overlays, right click on map on Object Manager, then select Order Overlay

Replacing contour maps in an existing overlay Select the map that you wish to change and open Properties Change Input grid file in General Tab Note: When one map in a series of overlays is changed, the collection of overlays usually changes size. Select map and open Properties, select Scale Tab, un-check “Proportional Scaling”, and re-set the length scales (X=6.0 in and Y=1.5 in for BTIMAX CTD plots) E. Overlaying Maps

Other ideas... Wireframe Map with Classed Post Overlay Iterative Model Output Vector Maps

For more Surfer tools

For more Surfer tools Surfer Base Map Repository

Contains base maps and.bln files If you create new base maps and would like to share them with the community, please send them to E. North along with proper documentation (see.srf file in Chesapeake-Delaware-Bays folder for an example).

For more Surfer tools Scripter Programs

Golden Software Scripter TM is a program for developing and running scripts. A script is a text file containing a series of instructions carried out when the script is run. Instructions are written in a Visual BASIC- like programming language. Scripter is included when you purchase Surfer.

A.Examples B.Post Maps C.Base Maps D.Contour Maps E.Overlaying Maps Surfer Workshop Based on Golden Software Surfer 8.0 ( 1. Lecture 2. Application to data 3. Group review and discussion

Example Data Files: Folder: SurferWorkshop\Morning_Examples\UpperChesapeake_CTDSurvey_BITMAX

Example Data Files: Folder: SurferWorkshop\Morning_Examples\Chesapeake_Delaware_Map