Yong Technology Inc. is a provider of innovative engineering software solutions.

GeoRose 0.5.0 – A Free Geological Rose Diagram and Stereonet Plotting Program

We are happy to announce that GeoRose 0.5.0 is released.

With GeoRose 0.5.0, users are able to plot stereonet diagram with plane data and lineation data for both equal area and equal angle projections, . Users can fully control the style of the diagram as in rose diagram plotting mode.

At the same time, polar area diagram is ruled out in this release. If you use GeoRose for roots directions statistics, please don’t update it to 0.5 version.

Your feedback will be very welcome.


Custom p-y curve example in PyPile

Users can customize their p-y curves using JavaScript in PyPile, which provides great flexibility to create p-y curves for any type of soils. The following code is an example to show how to use JavaScript to create p-y curve for stiff clay without free water presence (Reese).

The parameters of this function are specified by users or obtained from current and upper soil layers. The function returns lateral force P based on the deflection y and its user-defined p-y model.

function PyFunction(y, depth, top, bottom, r, r_ave, c, c_ave, phi, e50, k, u0, u1, b, cyclic){
    var P

    var J = 0.5
    var Pu = Math.min((3 + r_ave / c * depth + J / b * depth) * c * b, 9 * c * b)
    var y50 = 2.5 * e50 * b

    if (y < 16 * y50) {
        P = 0.5 * Math.pow(y / y50, 0.25) * Pu
    else {
        P = Pu

    return P

PyPile – A free lateral pile analysis program

We are pleased to announce the first release of PyPile 0.1.0. PyPile is a free lateral pile analysis program.

Apart from its ordinary functions available in other software in the market, PyPile comes with some unique functions:

  1. Users can implement custom p-y curve with JavaScript.
  2. Users can customized output Excel charts.
  3. Soil profile with pile sketch can be exported to PNG or SVG image.

PyPile is available here. Please feel free to let me know your thoughts.

PileLink 1.1.0 Released

I’m happy to announce that PileLink 1.1.0 has been released. The main focus for this release was performance, stability and usability.

New features are listed below:

  • More convenient find box;
  • Pile statistics;
  • Customizable point size;
  • Customizable label text font size;
  • Customizable label angles;
  • Scale bar added;
  • Only one diameter for all piles is possible.

PileLink 1.0.0 released

We are pleased to announce the release of PileLink 1.0.0.

PileLink 1.0.0 greatly simplified the work procedure to manage pile foundation data. After version 0.3.0, two internal versions were developed and used in some projects. We found out that it would be better if we let PileLink focus on data visualization. Now PileLink 1.0.0 focuses on visualization functions and has totally transferred data editing functions to spreadsheet software, so that users can make use of the rich editing functions of those programs.

With PileLink 1.0.0, users will edit pile data with MS Excel or other spreadsheet software and save the data in Xlsx file. PileLink can link the Xlsx file and visualize the data. Once the linked external Xlsx data file is changed, PileLink will update the drawing to reflect the external changes automatically.

If users have experience with PileLink 0.3.0, they will find PileLink 1.0.0 will be much simpler. With the example included in the installation package, a new user could understand and start to use it within a couple of minutes.

Please note the file format of PileLink 1.0.0 is not compatible with that of previous versions. Before update to current version, please copy the data of previous versions to spreadsheet programs.

GeoRose 0.3.0 Released

I am very happy to announce that GeoRose 0.3.0 now is available. GeoRose 0.3.0 is a completely rewritten version. Now users can completely control their rose diagrams’ displaying style. Supported image export formats extended to PNG, PDF, PS and SVG. Furthermore, transparent diagram background is available. With this function, overlaying rose diagram on top of other image files becomes a piece of cake.

PileLink 0.3.0 released

We are pleased to announce the release of PileLink 0.3.0. PileLink specializes in pile data management. Its original name is PointLink.

This version is a completely rewritten version. It is more user-friendly and stable. We have fixed a number of bugs and made a number of improvements. The features are detailed in the download page. We encourage all users to upgrade to this version.