Category: NZTekonverse -> Linux

Today’s little bit of fun and games has been to change the script so that it can read in a list file and process a list of source layers and produce the world and auxiliary files for them. Last night I discovered there was some additional aerial photos available for OtiraNorth area, for which I…

I made a lot of progress on this on Wednesday, mainly due to dropping nearly everything else and pushing on to finish it. After testing it, which so far has worked well, I decided to add an extra step to the workflow. The source layer (base layer) is a jpg file and we are making…

Continuing from our last post, we now want to find tile segments that need world files written for them and generate those files.  The code to do this (from the steps outlined previously is: Strip the extension off the base file (92XJ7-92MKF.jgw) so that we get 92XJ7-92MKF: baseNameBase = os.path.splitext(baseName)[0] Split the filename at the…

Last time we had a look at how to read data from our files and store it in a list. This time we are going to get that data and perform the calculations we need on it. First thing is to convert the numbers read out as strings to floats. The numbers we need are…

Yesterday we looked at how to collect command line parameters easily in a Python script. Today we need to turn the parameters into filenames and then read their contents to memory. First thing is to get the arguments into variables we can refer to and manipulate. This is pretty simple as the arguments are stored…

This is a technical description of the scripting project which is for dividing a large layer into segments for NZ Rail Maps. As discussed in some previous posts I am taking for example a 0.4 metre resolution tile and scaling it to 0.1 metre resolution making it 16 times the area of the original. Then…

I’ve written a few posts about different scripts I am planning to look at. At the moment the ones that are most important are: A script to do segmented layer fractions for NZ Rail Maps. I am doing this very slowly and laboriously with a spreadsheet and keep making mistakes and having to paste things…