tclarke

from time import perf_counter
from datetime import timedelta

class PerfTimer:
  def __init__(self, name="Timer"):
    """ Create a performance timer context manager.
        These output the start and end of a block of code and the time it took to execute.
        They can be nested for hierarchical timing.
        
        @param name The name to output in the status messages

tclarke

#!/usr/bin/env python3
import numpy as np

##
# Define different resistor series. You almost never see e3 and e6 but they are here for completeness.
# E96 are widely available and generally inexpensive so that's the default series.

# 40% tolerance
e3 = np.array([1. , 2.2, 4.7])

tclarke

Keybase proof

I hereby claim:

• I am tclarke on github.
• I am retrev (https://keybase.io/retrev) on keybase.
• I have a public key ASATQZGBLX_lq8tVGEiLqRiQYNYsEcBLuyEsuG6MFK5JGwo

To claim this, I am signing this object:

tclarke

for k, v in os.environ.iteritems():
    if k.startswith("MYAPP_"):
        try:
            locals()[k[6:]] = type(locals()[k[6:]])(v)
        except KeyError:
            locals()[k[6:]] = v

tclarke

import numpy as np
import cv2

# cellular automata class based on code from http://www.loria.fr/~rougier/teaching/numpy/scripts/game-of-life-numpy.py
class CA(object):
    def __init__(self, s, b, shape, init_fill=0.1):
        assert(type(s) == type([]) and type(b) == type([]))
        self.s,self.b = s,b
        self.z = (np.random.random(shape) < init_fill).astype("uint8")

tclarke

[ 54%] Building CXX object src/CMakeFiles/pdalcpp.dir/UserCallback.cpp.o
[ 54%] Building CXX object src/CMakeFiles/pdalcpp.dir/Utils.cpp.o
[ 55%] Building CXX object src/CMakeFiles/pdalcpp.dir/Vector.cpp.o
[ 55%] Building CXX object src/CMakeFiles/pdalcpp.dir/Writer.cpp.o
[ 55%] Building C object src/CMakeFiles/pdalcpp.dir/third/md5-pdal.c.o
[ 56%] Building CXX object src/CMakeFiles/pdalcpp.dir/XMLSchema.cpp.o
[ 56%] Building CXX object src/CMakeFiles/pdalcpp.dir/drivers/buffer/Reader.cpp.o
[ 57%] Building CXX object src/CMakeFiles/pdalcpp.dir/drivers/faux/Reader.cpp.o
[ 57%] Building CXX object src/CMakeFiles/pdalcpp.dir/drivers/faux/Writer.cpp.o
[ 57%] Building CXX object src/CMakeFiles/pdalcpp.dir/drivers/las/GeotiffSupport.cpp.o

tclarke

import numpy

def fib(a,b):
  "Generator for the fibonacci sequence starting at position a,b"
  while True:
    yield b
    a,b=b,a+b

def ld(v):
  "Determine the left-most digit in v"

tclarke

import zmq

def publisher():
  c=zmq.Context()
  s=c.socket(zmq.PUB)
  s.bind('tcp://127.0.0.1:1234')
  s.send("foobie")

def subscriber():
  c=zmq.Context()

tclarke

DataAccessor acc = pRaster->getDataAccessor();
DataAccessor outacc = pOutRaster->getDataAccessor(writableDataRequest.release());
/** code to flip horizontally **/
for (int row = 0; row < numrows; ++row) {
  VERIFY(acc.valid() && outacc.valid());
  memcpy(outacc->getRow(), acc->getRow(), rowSizeInBytes);
  // note: pixeldatatype is the C++ type for BSQ..for BIP, you'll need to use a struct..somthing like this for 10 bands 2-byte data
  // struct {uint16_t data[10];}
  // or just use a second loop with appropriate memcpy's
  std::reverse((pixeldatatype*)outacc->getRow(), ((pixeldatatype*)outacc->getRow()) + pixelsPerRow);