Skip to main content

Photo organizer for Mac III

Ok, I'm gonna write my own.
  1. GUI will be done in C++/QT -
    I'm familiar with coding GUIs using this combination
    C++ should give the necessary snappy response such an app needs for comfort
  2. The database will be sqlite (the database will mirror the metadata for speedy searching and organizing)
  3. The core will be built around
    libiptcdata OR
    Both libraries are self contained, but I'm leaning towards exiv2 because libiptcdata can not read/write Exiv info
Project road map:
  1. Put down on paper what the program will do and what its interface will look like
  2. Download, compile and install QT
  3. Figure out API for exiv2
  4. Write a baby program to read and write metadata using exiv2. The baby program should use a text based interface but have all the functionality of the final product
  5. Implement the full design

My new direction, instead of messing around with exiv2's C code, is to go back to the idea of building an interface around exiftool.

To start with I'll do batch operations to speed things up:
  1. The application (Chhobi) will import the picture library (batch read relevant metadata into its sqlite database)
  2. Accessing pictures will pull the data from the sqlite database
  3. Editing metadata will modify the sqlite database and set modified flags
  4. On command (or in the background, periodically) the modified metadata will be batch written to the actual images.
Now alive and kicking on github Moving this to sourceforge ( ...


Popular posts from this blog

Flowing text in inkscape (Poster making)

You can flow text into arbitrary shapes in inkscape. (From a hint here).

You simply create a text box, type your text into it, create a frame with some drawing tool, select both the text box and the frame (click and shift) and then go to text->flow into frame.


The omnipresent anonymous asked:
Trying to enter sentence so that text forms the number three...any ideas?
The solution:
Type '3' using the text toolConvert to path using object->pathSize as necessaryRemove fillUngroupType in actual text in new text boxSelect the text and the '3' pathFlow the text

Python: Multiprocessing: passing multiple arguments to a function

Write a wrapper function to unpack the arguments before calling the real function. Lambda won't work, for some strange un-Pythonic reason.

import multiprocessing as mp def myfun(a,b): print a + b def mf_wrap(args): return myfun(*args) p = mp.Pool(4) fl = [(a,b) for a in range(3) for b in range(2)] #mf_wrap = lambda args: myfun(*args) -> this sucker, though more pythonic and compact, won't work, fl)

Pandas panel = collection of tables/data frames aligned by index and column

Pandas panel provides a nice way to collect related data frames together while maintaining correspondence between the index and column values:

import pandas as pd, pylab #Full dimensions of a slice of our panel index = ['1','2','3','4'] #major_index columns = ['a','b','c'] #minor_index df = pd.DataFrame(pylab.randn(4,3),columns=columns,index=index) #A full slice of the panel df2 = pd.DataFrame(pylab.randn(3,2),columns=['a','c'],index=['1','3','4']) #A partial slice df3 = pd.DataFrame(pylab.randn(2,2),columns=['a','b'],index=['2','4']) #Another partial slice df4 = pd.DataFrame(pylab.randn(2,2),columns=['d','e'],index=['5','6']) #Partial slice with a new column and index pn = pd.Panel({'A': df}) pn['B'] = df2 pn['C'] = df3 pn['D'] = df4 for key in pn.items: print pn[key] -> output …