Comparing resampling methods in massivegeopackage: Difference between revisions
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== Result == | == Result == | ||
In massivegeopackage, the default resampling method is <code>average</code>, so we use that as a baseline. | In massivegeopackage, the default resampling method is <code>average</code>, so we use that as a baseline. For each method, we compare execution time relative to the baseline. Negative values indicate faster execution; positive values indicate slower execution. | ||
{| class="wikitable" | {| class="wikitable" | ||
|+Resampling methods benchmark | |+Resampling methods benchmark | ||
!Method | !Method | ||
!Average time | !Average time (seconds) | ||
! | !Difference vs. baseline | ||
|- | |- | ||
|average | |average | ||
|42.45 | |42.45 | ||
| | |0% | ||
|- | |- | ||
|nearest | |nearest | ||
|38.50 | |38.50 | ||
| | | -9% | ||
|- | |- | ||
|bilinear | |bilinear | ||
|57.66 | |57.66 | ||
| | |36% | ||
|- | |- | ||
|cubic | |cubic | ||
|61.80 | |61.80 | ||
| | |46% | ||
|- | |- | ||
|cubicspling | |cubicspling | ||
|60.64 | |60.64 | ||
| | |43% | ||
|- | |- | ||
|lanczos | |lanczos | ||
|66.82 | |66.82 | ||
| | |57% | ||
|- | |- | ||
|gauss | |gauss | ||
|54.28 | |54.28 | ||
| | |28% | ||
|} | |} | ||
Revision as of 15:14, 8 September 2026
There are a number of different resampling methods available in massivegeopackage. This article describes a benchmark to compare the processing time for each method when used on a typical dataset.
Method
| Resolution | 12.5m |
| File size | 713 MB |
| File count | 76 |
The benchmark was performed by running massivegeopackage on a typical topographical dataset covering Norway (N250). The test was run 6 times for each resampling method. The first run for each method was discarded to control for any OS level caching.
Result
In massivegeopackage, the default resampling method is average, so we use that as a baseline. For each method, we compare execution time relative to the baseline. Negative values indicate faster execution; positive values indicate slower execution.
| Method | Average time (seconds) | Difference vs. baseline |
|---|---|---|
| average | 42.45 | 0% |
| nearest | 38.50 | -9% |
| bilinear | 57.66 | 36% |
| cubic | 61.80 | 46% |
| cubicspling | 60.64 | 43% |
| lanczos | 66.82 | 57% |
| gauss | 54.28 | 28% |