Functions to compute statistics from a tatami::Matrix.
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| namespace | counts |
| | Functions for computing dimension-wise counts.
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| namespace | grouped_medians |
| | Functions for computing dimension-wise grouped medians.
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| namespace | grouped_sums |
| | Functions for computing dimension-wise grouped sums.
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| namespace | grouped_variances |
| | Functions for computing dimension-wise grouped variances.
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| namespace | medians |
| | Functions for computing dimension-wise medians.
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| namespace | ranges |
| | Functions for computing dimension-wise ranges.
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| namespace | sums |
| | Functions for computing dimension-wise sums.
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| namespace | variances |
| | Functions for computing dimension-wise variances.
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| template<typename Group_ > |
| size_t | total_groups (const Group_ *group, size_t n) |
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| template<typename Group_ , typename Size_ > |
| std::vector< Size_ > | tabulate_groups (const Group_ *group, Size_ n) |
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Functions to compute statistics from a tatami::Matrix.
◆ total_groups()
template<typename Group_ >
| size_t tatami_stats::total_groups |
( |
const Group_ * |
group, |
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|
size_t |
n |
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) |
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Count the total number of groups, typically for per-group memory allocations.
- Template Parameters
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| Group_ | Integer type for the group assignments. |
- Parameters
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| [in] | group | Pointer to an array of group assignments per observation. Each assignment should be an integer in \([0, G)\) where \(G\) is the total number of groups. |
| n | Number of observations, i.e., the length of the array referenced by group. |
- Returns
- Total number of groups, i.e., \(G\). Note that not all groups may actually have non-zero occurrences in
group.
◆ tabulate_groups()
template<typename Group_ , typename Size_ >
| std::vector< Size_ > tatami_stats::tabulate_groups |
( |
const Group_ * |
group, |
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|
Size_ |
n |
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) |
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Count the occurrences of each group.
- Template Parameters
-
| Group_ | Integer type for the group assignments. |
| Size_ | Integer type for the number of observations. |
- Parameters
-
| [in] | group | Pointer to an array of group assignments per observation. Each assignment should be an integer in \([0, G)\) where \(G\) is the total number of groups. |
| n | Number of observations, i.e., the length of the array referenced by group. |
- Returns
- Vector of length equal to \(G\), containing the number of occurrences of each group.
