Opt-in short aliases for power users. Refer the symbols you want: (require '[datajure.concise :refer [mn sm mx mi N dt fst lst wa ws]])
Aggregation helpers (operate on column vectors — use in :agg plain fns or directly): mn = mean sm = sum md = median sd = standard-deviation ct = count* (non-nil count) nuniq = count-distinct fst = first-val (first element) lst = last-val (last element) wa = wavg (weighted average) ws = wsum (weighted sum) cov = sample covariance of two columns corr = sample Pearson correlation of two columns tstat = one-sample t-statistic (mean / (sd / sqrt n)) mx = max* (column maximum) mi = min* (column minimum)
Statistical transforms (use inside #dt/e expressions as stat/* — these are direct refs to the runtime fns, useful outside #dt/e): standardize = stat/stat-standardize demean = stat/stat-demean winsorize = stat/stat-winsorize trim = stat/stat-trim rescale = stat/stat-rescale
Column selectors: col-range = positional range selector (core/col-range)
Everything else re-exported from datajure.core: N, dt, dt1, asc, desc, rename, pass-nil
Opt-in short aliases for power users. Refer the symbols you want: (require '[datajure.concise :refer [mn sm mx mi N dt fst lst wa ws]]) Aggregation helpers (operate on column vectors — use in :agg plain fns or directly): mn = mean sm = sum md = median sd = standard-deviation ct = count* (non-nil count) nuniq = count-distinct fst = first-val (first element) lst = last-val (last element) wa = wavg (weighted average) ws = wsum (weighted sum) cov = sample covariance of two columns corr = sample Pearson correlation of two columns tstat = one-sample t-statistic (mean / (sd / sqrt n)) mx = max* (column maximum) mi = min* (column minimum) Statistical transforms (use inside #dt/e expressions as stat/* — these are direct refs to the runtime fns, useful outside #dt/e): standardize = stat/stat-standardize demean = stat/stat-demean winsorize = stat/stat-winsorize trim = stat/stat-trim rescale = stat/stat-rescale Column selectors: col-range = positional range selector (core/col-range) Everything else re-exported from datajure.core: N, dt, dt1, asc, desc, rename, pass-nil
Ascending sort spec. Re-exported from datajure.core/asc.
Ascending sort spec. Re-exported from `datajure.core/asc`.
Positional column-range selector. Re-exported from datajure.core/col-range.
Returns a selector map for use with :select in dt.
Example: (dt ds :select (col-range :month-01 :month-12))
Positional column-range selector. Re-exported from `datajure.core/col-range`. Returns a selector map for use with :select in dt. Example: (dt ds :select (col-range :month-01 :month-12))
Sample Pearson correlation. Delegates to expr/corr. Args: x-col y-col; skips nil pairs.
Sample Pearson correlation. Delegates to `expr/corr`. Args: x-col y-col; skips nil pairs.
Sample covariance. Delegates to expr/cov. Args: x-col y-col; skips nil pairs.
Sample covariance. Delegates to `expr/cov`. Args: x-col y-col; skips nil pairs.
Count of non-nil values. Short alias for core/count* — matching the
#dt/e ct op and the documented concise vocabulary (was dtype/ecount, which
counted missing slots too; that drift from the docs/DSL is fixed).
Count of non-nil values. Short alias for `core/count*` — matching the #dt/e `ct` op and the documented concise vocabulary (was `dtype/ecount`, which counted missing slots too; that drift from the docs/DSL is fixed).
Demean a column: x - mean(x). Delegates to stat/stat-demean.
Demean a column: x - mean(x). Delegates to `stat/stat-demean`.
Descending sort spec. Re-exported from datajure.core/desc.
Descending sort spec. Re-exported from `datajure.core/desc`.
Main query function. Re-exported from datajure.core/dt.
Main query function. Re-exported from `datajure.core/dt`.
dt returning the single result row as a plain map (scalar reads from whole-table :agg). Re-exported from datajure.core/dt1.
dt returning the single result row as a plain map (scalar reads from whole-table :agg). Re-exported from `datajure.core/dt1`.
First value in a column. Delegates to expr/first-val.
First value in a column. Delegates to `expr/first-val`.
Last value in a column. Delegates to expr/last-val.
Last value in a column. Delegates to `expr/last-val`.
Column median. Short alias for core/median.
Column median. Short alias for `core/median`.
Column minimum. Short alias for core/min*.
Column minimum. Short alias for `core/min*`.
Column mean. Short alias for core/mean.
Column mean. Short alias for `core/mean`.
Column maximum. Short alias for core/max*.
Column maximum. Short alias for `core/max*`.
Row count helper. Re-exported from datajure.core/N.
Row count helper. Re-exported from `datajure.core/N`.
Count of distinct values. Delegates to expr/count-distinct.
Count of distinct values. Delegates to `expr/count-distinct`.
Nil-safe function wrapper. Re-exported from datajure.core/pass-nil.
Nil-safe function wrapper. Re-exported from `datajure.core/pass-nil`.
Type-7 p-quantile. Short alias for core/qnt. Args: col p [min-n].
Type-7 p-quantile. Short alias for `core/qnt`. Args: col p [min-n].
Rename columns. Re-exported from datajure.core/rename.
Rename columns. Re-exported from `datajure.core/rename`.
Min-max rescale a column to [0,1] (or [lo,hi]). Delegates to stat/stat-rescale. Args: col [new-lo new-hi].
Min-max rescale a column to [0,1] (or [lo,hi]). Delegates to `stat/stat-rescale`. Args: col [new-lo new-hi].
Column standard deviation. Short alias for core/stddev.
Column standard deviation. Short alias for `core/stddev`.
Column sum. Short alias for core/sum.
Column sum. Short alias for `core/sum`.
Standardize a column: (x - mean) / sd. Delegates to stat/stat-standardize.
Standardize a column: (x - mean) / sd. Delegates to `stat/stat-standardize`.
Trim a column at tail probability p (outside values → nil). Delegates to stat/stat-trim. Args: col p.
Trim a column at tail probability p (outside values → nil). Delegates to `stat/stat-trim`. Args: col p.
One-sample t-statistic: mean / (sd / sqrt n). Delegates to expr/tstat.
One-sample t-statistic: mean / (sd / sqrt n). Delegates to `expr/tstat`.
Weighted average. Delegates to expr/wavg. Args: weight-col value-col.
Weighted average. Delegates to `expr/wavg`. Args: weight-col value-col.
Winsorize a column at tail probability p. Delegates to stat/stat-winsorize. Args: col p [{:tail :both/:lower/:upper}].
Winsorize a column at tail probability p. Delegates to `stat/stat-winsorize`. Args: col p [{:tail :both/:lower/:upper}].
Weighted sum. Delegates to expr/wsum. Args: weight-col value-col.
Weighted sum. Delegates to `expr/wsum`. Args: weight-col value-col.
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