Blend & Compare

Comparing multiple lots, simulating blends, and tracking quality over time

The Blend & Compare section provides six specialized tools for multi-lot analysis. Access them from the Blend & Compare Home screen, which displays action cards for each comparison mode.

Comparison Modes

Side-by-Side Comparison

Compare two or more analysis files by viewing their results next to each other across the same variables and charts.

How to use:

1. From the Blend & Compare Home, click Side-by-Side.

2. Click Add Files to select up to 50 analysis files.

3. The file list shows each selected file with its detected model name.

4. Click Compare to open the side-by-side dashboard.

5. Results are displayed in parallel columns allowing direct comparison of class distributions, statistics, and quality metrics.

All selected files should have been analyzed with the same AI model for meaningful comparisons. The application detects the model name from each file's metadata.

Simulate Blend

Aggregate or proportionally blend results from multiple analysis files to predict the quality of a combined lot.

How to use:

1. From the Blend & Compare Home, click Simulate Blend.

2. Select the files to blend.

3. Choose the blend mode:

Mode	Description
Aggregate	Combines all seeds from all files into a single virtual lot
Proportional	Blends results according to user-defined proportions

1. In proportional mode, enter the proportion (percentage) for each file. Proportions must sum to 100%.

2. Click Blend to generate the combined result.

3. The blended dashboard shows the projected quality metrics for the combined lot.

Blend simulation is non-destructive — it does not modify any source files. The blended result is calculated in memory and displayed for review.

Merge Files

Combine multiple analysis files into a single new HDF5 file.

How to use:

1. From the Blend & Compare Home, click Merge Files.

2. Select the files to merge.

3. Enter an output filename for the merged file.

4. Click Merge to create the combined file.

5. Progress is tracked during the merge operation.

Merging creates a new file containing all seeds from the selected files. This can result in large files if merging many analyses.

Color Difference

Quantify color variation between samples using industry-standard Delta-E (ΔE) metrics.

How to use:

1. From the Blend & Compare Home, click Color Difference.

2. Select the analysis files to compare.

3. The application calculates the color difference between samples and displays:

   • Color circle visualization showing the color distribution of each sample.

   • ΔE values indicating the magnitude of color difference.

   • Reference color selection for baseline comparison.

Lot Tracking

Monitor quality changes in a single lot over time by comparing sequential analysis files.

How to use:

1. From the Blend & Compare Home, click Lot Tracking.

2. Select multiple analysis files from the same lot, recorded at different times.

3. The application generates a temporal analysis showing:

   • Quality evolution over time.

   • Deviation from baseline measurements.

   • Trend indicators for key metrics.

Compare Multiple Lots

Evaluate consistency and variability across independent lots.

How to use:

1. From the Blend & Compare Home, click Compare Multiple Lots.

2. Select up to 50 analysis files from different lots.

3. The application generates cross-lot comparisons showing:

   • Statistical consistency metrics.

   • Variability analysis across lots.

   • Pattern identification for quality trends.

File Selection

All comparison modes share a common file selection interface:

• Click Add Files to browse for .hdf5 analysis files.

• Selected files appear in a list with their names and model information.

• Click the remove icon next to any file to deselect it.

• Click Clear All to reset the selection.

Troubleshooting

Issue	Possible Cause	Solution
Compare button is disabled	Fewer than 2 files selected	Select at least two analysis files
Model mismatch warning	Files analyzed with different models	For meaningful comparisons, use files analyzed with the same model
Blend proportions don't sum to 100%	Manual entry error	Adjust proportions so they total exactly 100%
Merge creates an empty file	Selected files have no AI results	Run AI Classification on the source files first
Color difference shows unexpected values	Files from very different coffee origins	This is expected; ΔE reflects the actual color variation