Official version history and changelog information for Surfer (2023). 

Surfer 26.1.216 (Sept 6, 2023)

Improvements

• 3D View: 3D Grid: Clipping Plane
• 3D View: 3D Grid: Image slices
• 3D View: 3D Grids: delete layers/models created from Add to 3D Grid
• 3D View: 3D PDF Export: export objects to Model Tree in groups and use layer/group name from 3D view
• 3D View: 3D PDF/VRML Export: export axis titles and grid lines
• 3D View: create context menu
• 3D View: Z axis: show labels by default
• Attributes: edit or delete attributes in Properties for non-layer objects
• Drillhole Manager: reload data source from new location
• Drillhole Manager: Save imported data as a single table data file, multi-sheet XLSX file, or an XYZC data file
• Print: Save As PDF option
• Stretch: Color scale: update Height/Width/Margin when drag selection handles to resize, and do not stretch text
• Stretch: Scale bar: update Height when drag selection handles to resize, and do not stretch text
• Stretch: Symbols: do not stretch text or text labels when map or object is stretched
• Stretch: Text: do not stretch symbols if resize map

Fixes

• Coordinate Conversion: text objects really stretched and unreadable after changing Y
• Crash when adding intervals to drillholes
• Crash when creating an alpha shape
• Crash with adding more drillhole data and click 'Add All Fields'
• Drillhole layer: Drillhole paths load incorrectly initially in previous versions
• Exporting post map to an image file with high pixel count causes line of blank pixels
• Internal Error when exporting a vector (BLN, PDFv) file (TrGraphics.cpp)

Surfer 25.4.320 (Aug 26, 2023)

Improvements

• 3D View: Drillhole: option for labels to be at the Top of the Drillhole or at the Starting Depth
• 3D View: Lighting: use 3D view shading for Color Relief layers with the Hill shaded terrain representation
• 3D View: 3D PDF/VRML Export: export a single mesh instead of multiple mesh strips

Fixes

• 3D View: 3D PDF/VRML Export: apply opacity for uniformly-colored meshes
• 3D View: Adding and deleting volume items (e.g. isosurfaces) does not work properly with Undo/Redo
• 3D View: drillhole error showing intervals when there are blank From/To entries
• 3D View: lighting on polymesh entities can appear incorrectly stretched/compressed in the vertical direction
• Base map: Save File: Spatial References uses Paper space by default when saving to a raster file format
• Contour map: NoData areas are filled in v24 and above, if the grid was created in v16 or previous
• Crash in worksheet using numerical values with strlen and strcmp transform functions
• Crash when changing the source SHP for a base layer
• Drillhole: exception when calculating drillhole path without survey data and missing depth fields
• Grid Residuals doesn't update with correct data
• Internal Error after Assign Coordinate System (Axis.cpp)
• Internal Error when converting to Peaks and Depressions layer (PolygonUtility.cpp)
• Internal Error when Profile updating after Contour visibility toggle (NodeHelpers.cpp)
• Internal Error or crash when using string functions in worksheet transform

Surfer 25.3.290 (June 5, 2023)

Improvements

• 3D View: Drillhole: drillholes should still be displayed even with only one point in the survey table
• 3D View: Volume render: change default render mode to Sliced
• Color Scale: Labels: update Frequency as soon as Height changes (do not require parent layer change)

Fixes

• 3D View: Camera: XYZ Target values revert to default
• 3D View: Changing the Z Axis min/max caused incorrect object placement
• 3D View: Digitize: Non-opaque objects do not get "hit" by clicks
• 3D View: error was generated when using old Intel Graphics ("Invalid depth buffer size!")
• 3D View: Fly-Through: camera was not focused on constant point when playing
• 3D View: Z-axis auto-scaling not applied after Undo in plot view
• Crash when reloading drillhole data
• Crash when using Copy Properties with polymesh object
• GeoTIFF import: XY limits do not match metadata from other software
• Grid Data XYZC: spacing in Z direction changes # of Nodes in Y direction
• Internal Error in 3D view when creating flight path (Orientation.h)
• Internal Error saving large file, not enough memory (Main.cpp, Line 285)
• Internal Error when loading a non-PNG file (e.g. PDF, SRF, RAR, etc) using the PNG filter (gscatch.cpp)
• Overlay Maps: symbols in base layer change size when overlay

Surfer 25.2.259 (April 4, 2023)

Improvements

• 3D View: Drillholes: limit the visualization by map limits, not layer limits
• 3D View: improve redraw speed
• 3D View: reloading data in 2D plot view should not remove properties and modules from 3D view
• 3D View: transparency issues have been improved
• 3D View: water level inconsistent when the 3D blend function is enabled
• Contour: 3D Grids: Advanced level method: maintain level properties when changing Z slice
• Drillhole Data Import: make table names consistently plural
• JP2 file from NAIP issues error upon import because of 5th color component
• Viewshed: 3D Grids: needed its own Slice Z value property

Fixes

• 3D PDF Export: PDF file crashes Adobe upon opening if over 200"
• 3D View: raycast volume render face was clipped out
• 3D View: camera angle returned to default when opening SRF files
• 3D View: drillhole: drillholes don't appear if you delete drillholes in 2D view before creating 3D view, or if you load a single drillhole
• 3D View: isosurface volume reverts to "Calculating..."
• 3D View: multiple 3D views can be created from same map when using '3D View' button in properties
• 3D View: visualization created from 3D Surface (3D Grid) has incorrect Z dimensions
• Base Layer: 'STD Exception - bad numeric conversion' error when trying to create a Base layer from a WRL file
• EPSG 2136: not applying gold coast feet to meters conversion
• EPSG 22391: wrong EPSG code (supposed to be 22332)
• EPSG 2314: not applying Clarke's Feet to meters conversion
• Grid Data: "Inadequate data after filtering" error thrown when the X and Y data ranges are vastly different
• Internal Error when importing an EMF as a base map and break apart metafiles (EmfImportFilter.cpp)
• Map Layers: 3D grid is converted to 2D grid, if 2D grid layer also exists and 3D grid slice Z value is at minimum

Surfer 25.1.229 (February 1, 2023)

New Features & Improvements

• 2D plot: Create 2D maps from 3D grids using slice number
• 3D Grids: Grid Info
• 3D Objects: when saved to older SRF file formats, convert 3D polylines/polygons to 2D polylines/polygons
• 3D View: Export Image: match color scale placement/size to view
• 3D View: IsoSurface: calculate volume
• 3D View: option to auto-adjust the Vertical Exaggeration
• 3D View: visualize 3D Grid as a rendered volume
• 3D View: visualize 3D Grid as an isosurface
• 3D View: VRML Export Options: Remove unused "height" option
• Automation: 3D grids: Layer objects: load/save 3D grids from GridXYZC object, and update/create layer object
• Automation: 3D grids: Layer objects: update GridFile property to include 3D grids (GridXYZCFile)
• Automation: GridData: grid XYZC data
• Export/Save As dialogs: remove 'All Files (*.*)' from Save As Type or Export menus
• Grid Data: 3D gridding of XYZC data in Surfer
• Map Limits/Size: when change CS for map, Limits should be converted (and longest dimension should remain same size)
• Move the anchor point for labels on points, polylines or polygons
• PDF (vector) export: clip object if partially inside the page outline
• PDF (vector) export: increase resolution of images
• PDF (vector) export: decrease minimum dash length (so dots look like dots)
• VTK Export Options: remove/rename 'Type min' and 'Type max' as options for setting NoData nodes to

Fixes

• 3D View: contents gets confused between 2D and 3D grids in different windows when Digitize mode is enabled
• 3D View: Crash when creating 3D view for old SRF
• 3D View: redrawing view (turning base textures on/off, adjusting source map) affects grid textures in coincident areas
• 3D View: Z limits don't take into account drillhole layers when geotransform exists
• Base layer: Labels disappear for objects in group
• Base layer: Polygons disappear when in a group and geotransformed
• Color Scale: Surfer will get stuck if the labels are set to auto frequency and the height is too small
• Colormap: Custom colormap with single quote character in name causes launch error
• Crash after using Grid Filter possibly due to raw pointer usage
• Crash when gridding LAZ file and running out of memory
• Crash when making edits to a contour map and closing Surfer
• Georeference Image: GEOREF files can't be saved from Notepad and re-imported
• GeoTiff: EPSG 3571 - 3576: incorrect latitude of center (Lat0)
• Opening older SRF files with maps/layers in Lambert Azimuthal Equal Area (LAEA) may not open with the correct geotransform
• PDF (vector and raster) export: Dashes in dashed lines are shifted
• PDF (vector) export: doesn't export page correctly when map is >200" and using application page size
• PDF (vector) export: doesn't export properly if text object contains parentheses in math text filepath
• PDF (vector) export: exports vector objects outside the page, when application page size is selected
• PDF (vector) import: vector objects are displaced from image