+++ /dev/null
-#! /usr/bin/awk -f
-#
-# Plot Simply
-#
-# TODO: Incremental plotting (new canvas for each data line)
-# TODO: Support manual set of max y
-
-function orange(str) {return "\033[33m" str "\033[0m";}
-function orange_bright(str) {return "\033[1;33m" str "\033[0m";}
-function green(str) {return "\033[32m" str "\033[0m";}
-function grey_dark(str) {return "\033[30m" str "\033[0m";}
-function grey_light(str) {return "\033[37m" str "\033[0m";}
-
-function abs(n) {return n >= 0 ? n : -n}
-function round(n_float) {return int(n_float + 0.5)}
-function log_10(n) {return log(n) / log(10)}
-
-function width(n, w) {
- #
- # log(0) == -inf
- #
- w = 1 + round(n > 0 ? log_10(n) : (n == 0 ? 1 : log_10(-n) + 1)); # +1 for neg sign
- #printf("n: %d, w: %d\n", n, w);
- return w;
-}
-
-function bins_append_item_to_bin(bin, val, bin_i) {
- bin_i = bin_item_count[bin]++;
- bins[bin, bin_i] = val;
-}
-
-BEGIN {
- # CLI options: w, h, p, a, b
- limits["canvas_width"] = (w ? w : 70);
- limits["canvas_height"] = (h ? h : 20);
- char_point = orange_bright(p ? p : ".");
- char_pad = grey_dark(a ? a : ""); # FIXME: non-blank pad is broken after adding the y labels
- char_blank = grey_dark(b ? b : "|");
- aggregation = g ? g : "mean";
- data_field = df ? df : 1;
-
- y_orig_min = 0;
- y_orig_max = 0;
-}
-
-{
- y_orig = $data_field;
- if (y_orig > y_orig_max) y_orig_max = y_orig;
- if (y_orig < y_orig_min) y_orig_min = y_orig;
- data_0[NR] = y_orig;
-}
-
-function aggregate_mean() {
-}
-
-function aggregate(array) {
- if (aggregation == "mean") {
- return aggregate_mean(array);
- } else {
- printf("Unknown aggregation: %s\n", aggregation) > "/dev/stderr";
- exit(2);
- }
-}
-
-function data_scaled_x_to_width(\
- data_in, data_out, limits,
-
- x_orig,
- datum,
- x_bin,
- bins,
- bin_item_counts,
- bin_sum,
- bin_item_count,
- i,
- bin_item,
- bin_mean \
-) {
- # Find limit points
- x_orig_min = 0;
- x_orig_max = 0;
- for (x_orig in data_in) {
- if (x_orig > x_orig_max) x_orig_max = x_orig;
- if (x_orig < x_orig_min) x_orig_min = x_orig;
- }
- #x_orig_range = x_orig_max - x_orig_min;
- # Place items in bins
- x_bin_min = 0;
- x_bin_max = 0;
- for (x_orig in data_in) {
- datum = data_in[x_orig];
- x_bin = round(x_orig * limits["canvas_width_x"] / length(data_in));
- if (x_bin > x_bin_max) x_bin_max = x_bin;
- if (x_bin < x_bin_min) x_bin_min = x_bin;
- bin_item_count = ++bin_item_counts[x_bin];
- bins[x_bin, bin_item_count] = datum;
- #printf("x_orig: %f, x_bin: %f, bin_item_count: %f, datum: %f\n", x_orig, x_bin, bin_item_count, datum);
- }
- # Aggregate bins
- for (x_bin in bin_item_counts) {
- bin_sum = 0;
- bin_item_count = bin_item_counts[x_bin];
- for (i = 1; i <= bin_item_count; i++) {
- bin_item = bins[x_bin, i];
- bin_sum += bin_item;
- #printf("x_bin: %f, bin_item_count: %f, bin_item: %f, bin_sum: %f\n", x_bin, bin_item_count, bin_item, bin_sum);
- }
- bin_mean = bin_sum / bin_item_count;
- data_out[x_bin] = bin_mean;
- #printf("x_bin: %f, bin_mean: %f, bin_sum: %f, bin_item_count: %f\n",
- #x_bin, bin_mean, bin_sum, bin_item_count);
- }
- limits["x_min"] = x_bin_min;
- limits["x_max"] = x_bin_max;
-}
-
-function data_scaled_y_to_height(\
- data_in, data_out, limits,
-
- data_scaled, x, y, y_orig, y_scaled \
-) {
- # Offset orig
- # TODO: Is there a better, closed-form way to get the offset?
- # TODO: Is there better way to map canvas to value ranges altogether?
- if (y_orig_min < 0) {
- offset_orig = -1 * y_orig_min;
- } else {
- offset_orig = 0;
- }
- for (x in data_in) {
- y = data_in[x];
- #printf("x: %f, y: %f, y_min: %f, y_max: %f\n", x, y, y_min, y_max);
- data_in_offsetted[x] = y + offset_orig;
- }
- y_orig_offseted_min = y_orig_min + offset_orig;
- y_orig_offseted_max = y_orig_max + offset_orig;
-
- # Scale to height
- y_scaled_min = 0;
- y_scaled_max = 0;
- for (x in data_in_offsetted) {
- y_orig_offsetted = data_in_offsetted[x];
- y_scaled = \
- y_orig_offseted_max > 0 \
- ? round((y_orig_offsetted * limits["canvas_height"]) / y_orig_offseted_max) \
- : 0;
- #printf(\
- #"x: %6.2f, y_orig_offsetted: %6.2f, y_orig_max: %6.2f, y_scaled: %6.2f\n",
- #x, y_orig_offsetted, y_orig_max, y_scaled);
- if (y_scaled > y_scaled_max) y_scaled_max = y_scaled;
- if (y_scaled < y_scaled_min) y_scaled_min = y_scaled;
- data_out[x] = y_scaled
- }
-
- # Save limits
- limits["y_min"] = y_scaled_min;
- limits["y_max"] = y_scaled_max;
- range_orig = y_orig_max - y_orig_min;
- offset_scaled = \
- range_orig > 0 \
- ? round(offset_orig * limits["canvas_height"] / range_orig) \
- : 0;
- limits["offset_scaled"] = offset_scaled;
- #printf("offset_orig: %f, offset_scaled: %f\n", offset_orig, offset_scaled);
-}
-
-function canvas_init(canvas, width, height, row, col) {
- for (row=0; row <= height; row++) {
- for (col=0; col <= width; col++) {
- canvas[row, col] = char_pad char_blank char_pad;
- }
- }
-}
-
-function canvas_overlay_highlight_ticks_x(canvas, limits, row, col) {
- for (col=limits["canvas_width_y"] - 1; col <= limits["canvas_width"]; col++) {
- offset = limits["offset_scaled"];
- #printf("offset: %f\n", offset);
- row = 0 + offset;
- #row = 0;
- canvas[row, col] = char_pad green("-") char_pad;
- }
-}
-
-function canvas_overlay_highlight_zero_row(canvas, limits, row, col) {
- #print "canvas_overlay_highlight_zero_row";
- for (col=limits["canvas_width_y"] - 1; col <= limits["canvas_width"]; col++) {
- offset = limits["offset_scaled"];
- row = 0 + offset;
- #printf("col: %6.2f, row: %6.2f, offset: %f\n", col, row, offset);
- #row = 0;
- canvas[row, col] = char_pad green("-") char_pad;
- }
-}
-
-function canvas_overlay_highlight_zero_col(canvas, limits, row, col) {
- #print "canvas_overlay_highlight_zero_col";
- for (row=0; row <= limits["canvas_height"]; row++) {
- col = limits["canvas_width_y"]; # was also -1. Why?
- # TODO: Refactor color/character configs to ease composition
- canvas[row, col] = green("|");
- }
- canvas[limits["canvas_height"], limits["canvas_width_y"]] = green("+");
- canvas[0 , limits["canvas_width_y"]] = green("+");
-}
-function canvas_overlay_highlight_zero(canvas, limits) {
- #print "canvas_overlay_highlight_zero";
- canvas[0 + limits["offset_scaled"], 0 + limits["canvas_width_y"]] = green("+");
-}
-
-function canvas_overlay_data(canvas, data, limits, x_data, x_canvas, y, yi, yj) {
- #print "canvas_overlay_data";
- for (x_data in data) {
- x_canvas = x_data + limits["canvas_width_y"] + 1;
- y = data[x_data];
- # TODO: Would be nice to scale width of all cells to the widest
- #point = y;
- #printf("canvas_width_y: %6.2f, x0: %6.2f, x1: %6.2f, x: %6.2f, y: %6.2f\n",
- #limits["canvas_width_y"], x0, x1, x, y);
- # TODO: This special case for 0 is kind of a kludge - can we do better?
- canvas[y, x_canvas] = x_data == 0 ? char_point : char_pad char_point char_pad;
-
- if (y > limits["offset_scaled"]) {
- for (yi = y - 1; yi >= limits["offset_scaled"]; yi--) {
- #printf("yi: %6.2f\n", yi);
- canvas[yi, x_canvas] = x_data == 0 ? orange("|") : char_pad orange("|") char_pad;
- }
- } else if (y < limits["offset_scaled"]) {
- for (yj = limits["offset_scaled"]; yj > y; yj--) {
- #printf("yj: %6.2f\n", yj);
- canvas[yj, x_canvas] = x_data == 0 ? orange("|") : char_pad orange("|") char_pad;
- }
- }
- }
-}
-
-function canvas_overlay_y_lab(canvas, limits, y_lab_fmt, y_max_str, i) {
- y_lab_fmt = "%" limits["canvas_width_y"] - 1 "d ";
- y_max_str = sprintf(y_lab_fmt, y_orig_max);
- y_min_str = sprintf(y_lab_fmt, y_orig_min);
- #printf("y_width: %f, y_max_str: \"%s\", y_min_str: \"%s\"\n", limits["canvas_width_y"], y_max_str, y_min_str);
- for (i=1; i<=length(y_max_str); i++) {
- canvas[limits["canvas_height"], i - 1] = substr(y_max_str, i, 1);
- }
- canvas[0 + limits["offset_scaled"], 0 + limits["canvas_width_y"] - 1] = 0;
- for (i=1; i<=length(y_min_str); i++) {
- canvas[0, i - 1] = substr(y_min_str, i, 1);
- }
-}
-
-function canvas_print(canvas, limits, row, col) {
- for (row = limits["canvas_height"]; row >= 0; row--) {
- for (col = 0; col <= limits["canvas_width"]; col++) {
- printf("%s", canvas[row, col]);
- }
- printf("\n");
- }
-}
-
-END {
- # Find maximum y number width
- y_orig_min_width = width(y_orig_min);
- y_orig_max_width = width(y_orig_max);
- if (y_orig_max_width >= y_orig_min_width) {
- y_width = y_orig_max_width;
- } else {
- y_width = y_orig_min_width;
- }
- limits["canvas_width_y"] = y_width + 1;
- limits["canvas_width_x"] = limits["canvas_width"] - limits["canvas_width_y"];
-
- data_scaled_x_to_width(data_0, data_1, limits);
- data_scaled_y_to_height(data_1, data_2, limits);
-
- canvas_init(canvas, limits["canvas_width"], limits["canvas_height"]);
- canvas_overlay_highlight_zero_row(canvas, limits);
- canvas_overlay_highlight_zero_col(canvas, limits);
- canvas_overlay_highlight_zero(canvas, limits);
- canvas_overlay_y_lab(canvas, limits);
- canvas_overlay_data(canvas, data_2, limits);
- #for (l in limits) {
- #printf("limits[%s] -> %s\n", l, limits[l]);
- #}
- canvas_print(canvas, limits);
-}
-
-# An even better way to think about scaling: ratios!!! Duh! :-D
-#
-# val_max / val_current = width / val_scaled
-#
-# val_max width
-# ----------- = ------------
-# val_current val_scaled
-#
-# val_max * val_scaled = val_current * width
-# val_scaled = (val_current * width) / val_max
-#
-#
-# num_data_points width
-# ---------------- = -----
-# x 1
-#
-# width * x = num_data_points
-# x = num_data_points / width
-#
-# But that is what I already tried, and it is awkward to scale up when
-# thinking thsese terms, so it is much better to first route each data
-# point to an appropriate bin and then aggregate each bin:
-# 1. Route: bins[scale(datum)]
-# 2. Aggregate: for bin in bins: for val in bin: aggregate(val)
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