Loading Datasets

Image types:

• Over 30 types supported (GIF, JPEG, Analyze, TIFF)
• Can be extended.

Load / Load As...:

• Loads individual files
• Placed on desktop
• Object automatically selected
• Load As... permits transforms such as resizing

Import/Export...:

• File to File...
  • Converts formats
  • 2D -> 3D conversion
  • Will not merge differing sizes automatically
• Volume Tool...
  • Files listed by path name
  • No automatic conversion

Append:

• Right mouse button
• Specify how to append
• Can also get image info

---

Notes

Analyze_AVW is started by typing "Analyze" (with a capital "A") at the command prompt. Analyze recognizes about 30 different common image formats - formats like TIFF and JPEG, and more esoteric like DICOM. Of course, it reads the old analyze format as specified by the ".hdr" and ".img" pairs.

(As an aside, Analyze_AVW uses a new image format that combines the ".hdr" and ".img" formats into one file. The header editor, which is still available, should never be needed either, as the new format is entirely self-contained and is generated automatically by the software.)

Two methods exist for placing images - both 2D and 3D - into the Analyze_AVW workspace: using Load (or Load As) and using Import/Export.

Load reads single files. Load As permits transformations to the dataset: scaling, rotation, padding, etc.

Import/Export will handle data conversion, compaction (using Wavelets), and combination. The "File to File..." program can place multiple images into a single file. "Volume Tool" creates volume files using lists of paths to the files, and can be edited using a text editor.

If the sizes do not match, an warning is given. The best method for avoiding this problem is to pad the smaller dataset with "null" data, then append the dataset in the workspace using the append feature. The old analyze handled this automatically in a very evil way: it altered the data without disclosing the fact!

---

For Demo

• File: Load As. Load "~d-weber/analyze/l-fang1/621.avw" padding x with 1.
• File: Import/Export: File to File.... Select 622 and chose "*" as the filter. Convert and save as "622.avw".
• Select the two datasets 621 and 622, right mouse "append".

Page 10 of 17