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Computers & Programming

Computers & Programming

Lake Tahoe Temperature

A long time ago, I added some AJAX code to my blog so that the Lake Tahoe water temperature is displayed on my blog pages. It’s in the right navigation column down at the bottom. It doesn’t appear immediately and sometimes not at all if the temperature server…

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Linkage Program

Linkage Bug/Feature List

I’m getting more requests for features in the Linkage program than ever before. I am now using Axosoft issue tracking software to keep track of bugs and feature requests. Here’s the current list that I generated from user emails and from my memory of things that I want….

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Computers & Programming

Preview Upload File, Part 3

This post is just here to hold the sources for the latest version of the image preview JavaScript code. I moved the code out of some generic files that hold a bunch of other JavaScript code and CSS data, and into files specific to the image preview page….

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Computers & Programming

Fours Puzzle

A long time ago, my brilliant daughter was in the Gifted-and-Talented (G.T.) program at her school. She had an assignment to find an equation for each number from 0 to 50 with the rules being that the digit 4 must appear 4 times in the equation, and that…

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Computers & Programming

Simulator Steps & Gravity

The linkage program has an interesting problem; any one simulation step starts with the mechanism in its original position and then processes the inputs to generate a new position for every link. Actuator lengths are also changed to their new lengths at the same time. What this means…

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Linkage Program

Exporting Better Images in Linkage

I updated the documentation but never posted about the new image export functionality in the Linkage program. I added the ability to select the image size from a set of four useful sizes. I also added options for scaling; to make things like lines, connector circles, and text;…

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Linkage Program

Linkages, Cams, Gears, Etc.

With gears somewhat working in the Linkage program (there is a small glitch to fix still), I need to figure out what to do next. I have a list of user requests as well as a list of things that I want. I’m not sure what to do…

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Computers & Programming

Programming in Swift for iOS

I just finished writing my first Swift app for iOS. It’s the very common tutorial app “Tip Calculator” which accepts a bill amount and then shows a tip and total based on the selected tip percentage. The tutorial is from the book iOS for Programmers: An App-Driven Approach…

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