Tag Archives: programming

PHP/Javascript/HTML Geographical Placename Integration Tutorial

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Here is a tutorial that presents various functionality via placename lookups of Latitude and Longitude. The inhouse functionality was applied in a centralized way when we did PHP/Javascript/HTML Geographicals By Placename Tutorial but for this tutorial, as promised, we add … Continue reading →

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Linux diff Primer Tutorial

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The Linux (or unix) command diff is a powerful command line tool that does file comparisons at the command line of a Linux (or unix) operating system. When you are coding this type of tool can be very important. You … Continue reading →

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PHP/Javascript/HTML Geographicals By Placename Tutorial

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Here is a tutorial that presents various functionality via placename lookups of Latitude and Longitude. The inhouse functionality called on include Sun Angles, Moon Angles and Great Circle Distances. Am hoping it can give some pointers to ideas to do … Continue reading →

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PHP/Javascript/HTML Moon Angle Tutorial

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Here is a tutorial that calculates Noon Moon Angles from Earth via the entry of Latitude and Longitude. The calculation of noon moon angles uses the concept of Sublunary Point, which is explained in the quote from Wikipedia below. The … Continue reading →

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HTML/Javascript Quadratic Equations Tutorial

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Here is a tutorial showing some client-side basics in HTML and Javascript that can verify your calculation of the roots of a quadratic equation. The inspiration for this came from the tutorial here. Sometimes a graphical representation of the Quadratic … Continue reading →

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PHP/Javascript/HTML Sun Angle Tutorial

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Here is a tutorial that calculates Noon Sun Angles on Earth via the entry of Latitude and Longitude. The calculation of noon sun angles uses the concept of Subsolar Point, which is explained in the quote from Wikipedia below. The … Continue reading →

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Linux cURL Primer Tutorial

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The Linux (or unix) command cURL is a powerful command line tool, that, if installed, may help you garner data by means of data scraping (or screen scraping, or, as in our case, web scraping) from the web, within the … Continue reading →

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PHP/Javascript/HTML Great Circle Distance Tutorial

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Here is a tutorial that calculates Great Circle Distances on Earth via the entry of Latitude and Longitude. The calculations are not true geodesic calculations and so, we will show the result to the nearest metre. We assume the radius … Continue reading →

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