Use numpy to build faster histogram plots

README.md

@@ -48,6 +48,7 @@ The **installing instructions** are [here](https://github.com/piccolomo/plotext/
 - [Environments](https://github.com/piccolomo/plotext/blob/master/readme/environments.md)
 - [Notes](https://github.com/piccolomo/plotext/blob/master/readme/notes.md)
 
+
 ---
 
-Some interesting [life questions](https://github.com/piccolomo/plotext/blob/master/readme/notes.md#life-questions)
+Some [questions](https://github.com/piccolomo/plotext/blob/master/readme/notes.md#some-questions) to consider

plotext/_core.py

@@ -354,8 +354,8 @@ def join_paths(*args):
 def save_text(text, path, log = True):
     return _ut.save_text(text, path, log = log)
 
-def read_data(path, delimiter = None, columns = None):
-    return _ut.read_data(path, delimiter = delimiter, columns = columns)
+def read_data(path, delimiter = None, columns = None, skip_rows = 0):
+    return _ut.read_data(path, delimiter = delimiter, columns = columns, skip_rows = skip_rows)
 
 def write_data(data, path, delimiter = None, columns = None, log = True):
     return _ut.write_data(data, path, delimiter = delimiter, columns = columns, log = log)

plotext/_utility.py

@@ -1,4 +1,5 @@
 import sys, shutil, os, re, math, inspect
+import numpy as np
 from plotext._dict import *
 
 ###############################################
@@ -220,12 +221,12 @@ def delete_file(path, log = True): # remove the file if it exists
         os.remove(path)
         print(format_strings("file removed:", path, negative_color)) if log else None
 
-def read_data(path, delimiter = None, columns = None, header = None): # it turns a text file into data lists
+def read_data(path, delimiter = None, columns = None, skip_rows=0): # it turns a text file into data lists
     path = correct_path(path)
-    header = True if header is None else header
     file = open(path, "r")
-    begin = int(not header)
-    text = file.readlines()[begin:]
+    for _ in range(skip_rows):
+        next(file)
+    text = file.readlines()
     file.close()
     return read_lines(text, delimiter, columns)
 
@@ -714,16 +715,17 @@ def hist_data(data, bins = 10, norm = False): # it returns data in histogram for
     #data = [round(el, 15) for el in data]
     # if data == []:
     #     return [], []
-    bins = 0 if len(data) == 0 else bins
-    m, M = min(data, default = 0), max(data, default = 0)
-    data = [(el - m) / (M - m) * bins if el != M else bins - 1 for el in data]
-    data = [int(el) for el in data]
-    histx = linspace(m, M, bins)
-    histy = [0] * bins
-    for el in data:
-        histy[el] += 1
-    if norm:
-        histy = [el / len(data) for el in histy]
+    # bins = 0 if len(data) == 0 else bins
+    # m, M = min(data, default = 0), max(data, default = 0)
+    # data = [(el - m) / (M - m) * bins if el != M else bins - 1 for el in data]
+    # data = [int(el) for el in data]
+    # histx = linspace(m, M, bins)
+    # histy = [0] * bins
+    # for el in data:
+    #   histy[el] += 1
+    # if norm:
+    #     histy = [el / len(data) for el in histy]
+    histy, histx = np.histogram(data, bins=bins, density=norm)
     return histx, histy
 
 def single_bar(x, y, ylabel, marker, colors):

plotext/plotext_cli.py

@@ -37,6 +37,12 @@ def build_parser():
                              metavar = "FILE",
                              help    = "file path of the data table; if not used it will read from stdin. Use 'test' to automatically download, in your user folder, some test data/image/gif or video, depending on the function used; the file will be removed after the plot",
                              ).complete = shtab.FILE
+    path_parser.add_argument("-r", "--skip-rows",
+                             action = "store",
+                             type = int,
+                             default = 0,
+                             metavar = "ROWS",
+                             help = "Skip ROWS rows of the data file.")
 
     common_parser = argparse.ArgumentParser(add_help = False)
 
@@ -237,8 +243,10 @@ def main(argv = None):
     args = parser.parse_args(argv)
 
     type = args.type
+    skip_rows = 0
     if type != "youtube":
         path = args.path
+        skip_rows = args.skip_rows
         clt = True if args.clear_terminal[-1] == 'True' else False
         sleep = args.sleep[0]
 
@@ -303,6 +311,8 @@ def plot_text(text):
                 x, Y = get_xY(data)
                 plot(x, Y)
 
+            for _ in range(skip_rows):
+                sys.stdin.readline()
             text = []
             i = 0
             for line in iter(sys.stdin.readline, ''):
@@ -316,7 +326,7 @@ def plot_text(text):
                 text = []
 
         else:
-            data = plt.read_data(path, delimiter = delimiter)
+            data = plt.read_data(path, delimiter = delimiter, skip_rows = skip_rows)
             data = plt.transpose(data)
             x, Y = get_xY(data)
             chunks = len(x) // lines + (1 if len(x) % lines else 0)

readme/notes.md

@@ -5,7 +5,8 @@
 - [Updates](https://github.com/piccolomo/plotext/blob/master/readme/notes.md#updates)
 - [Credits](https://github.com/piccolomo/plotext/blob/master/readme/notes.md#credits)
 - [Similar Projects](https://github.com/piccolomo/plotext/blob/master/readme/notes.md#similar-projects)
-- [Life Questions](https://github.com/piccolomo/plotext/blob/master/readme/notes.md#life-questions)
+- [Some Questions](https://github.com/piccolomo/plotext/blob/master/readme/notes.md#some-questions)
+
 
 [Main Guide](https://github.com/piccolomo/plotext#guide)
 
@@ -373,15 +374,14 @@ These count as well as source of inspiration:
 
 [Main Guide](https://github.com/piccolomo/plotext#guide), [Notes](https://github.com/piccolomo/plotext/blob/master/readme/notes.md#notes)
 
-## Life Questions
+## Some Questions
 
 - Is [Consciousness](https://www.youtube.com/watch?v=Bim73icRzCk) and [Love](https://www.youtube.com/watch?v=GHzAfj-62Uc) the unified truth of life, transcendent of space, time and death?
 - is there a [global cabal](https://www.youtube.com/watch?v=ZSqBNGxLiAs&list=PLnzMmEt4pIb83lZgEA3nALsDM1QogyvC0&index=17) of psychopaths/narcissists trying to manipulate humanity through fear and ignorance? If so, are they a manifestation of our collective shadow or ego? 
 - Is it possible then, that collective [shadow work](https://www.youtube.com/watch?v=YgvrUi8BIWw), or ego-transcendence, is the most important effort humanity as a whole needs to face in order to evolve spiritually?
 - Are there [credible witness testimonies](https://www.youtube.com/watch?v=AmNzkxVwAYg&list=PLnrEt2fIdZ0aBgPuVF0C_T559YR20eDTc) of UFO activity and deep state cover-up? If so, could the deep state and the military industrial complex have any interest in portraying them in the future as a treat to humanity to justify the militarization of space?
+- What in the world is actually going on in [Hollywood](https://www.youtube.com/watch?v=TbNknirhUeA)? 
 
-Please notice: if any of the previous questions cause irritation or any ego reaction in you, could that suggest that shadow work and ego-transcendence is even more needed? 
-
-Your choice deciding the answer to such fundamental questions. I made mine a long time ago. My mind and heart is set free! Good luck in your journey towards real authenticity :-) ! 
+Your choice deciding the answer to such fundamental questions. I made mine a long time ago. My mind and heart is set free! 
 
 [Main Guide](https://github.com/piccolomo/plotext#guide), [Notes](https://github.com/piccolomo/plotext/blob/master/readme/notes.md#notes)