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<div dir="ltr" class="" id="yui_3_16_0_1_1452629940461_3059">Hi. <br class="" id="yui_3_16_0_1_1452629940461_2707">
I am currently working on "Improve Altitude vs. Time tool" task and here is a brief overview on my work. I
implemented the Altitude vs. Time tool with QCustomPlot library and until now I
have solved the following:<br class="" id="yui_3_16_0_1_1452629940461_2711">
- Set up the graph window<br class="" id="yui_3_16_0_1_1452629940461_2713">
- Set up the axis labels, Date time format and tick step ( the time's units
need to be discrete like: 01:00, 02:00 )<br class="" id="yui_3_16_0_1_1452629940461_2715">
- Set up the Top X Axis ( "Local Sidereal Time" )<br class="" id="yui_3_16_0_1_1452629940461_2717">
- Set up the interaction set: Zoom/Pan are now ready for use<br class="" id="yui_3_16_0_1_1452629940461_2719">
- Set up the margins, for a nice view ( e.g. in the right side, the graph window
was not closed before)<br class="" id="yui_3_16_0_1_1452629940461_2721">
- Set up the Zoom/Pan activated for the Top X Axis <br class="" id="yui_3_16_0_1_1452629940461_2723">
- Because I need a kind of limitation regarding the Zoom/Pan for the current
curve, I have used:<br class="" id="yui_3_16_0_1_1452629940461_2725">
1. 2 variables for minimum and maximum altitude from the current graph ( for
every curve that we insert into our graph, the minAlt and maxAlt variables are
updated )<br class="" id="yui_3_16_0_1_1452629940461_2729">
2. these variables are extremely useful to limit the Y axis to our graph most insignificant
curve regarding the minimum and maximum value<br class="" id="yui_3_16_0_1_1452629940461_2733">
3. 2 new slots: onXRangeChanged and onYRangeChanged, to update and limit the
axis<br class="" id="yui_3_16_0_1_1452629940461_2735">
- With all of these, I have connected the slots to the axis, with one remark:
the xAxis and xAxis2 are connected through the same slot, to behave as same<br class="" id="yui_3_16_0_1_1452629940461_2739">
- Rewrite the code for making existing curves with thin and red pencil<br class="" id="yui_3_16_0_1_1452629940461_2741">
- A short algorithm for setting up the tick step for xAxis and xAxis2 depending
on the Zoom level ( like: a half an hour after some zoom level: 1:30, 2:00; a
quarter hour after another zoom level and so on. this is necessary because
there wouldn't be anything to see if the initial tick step would be maintained
while continuously zooming )<br class="" id="yui_3_16_0_1_1452629940461_2747">
- Rewrite the method for removing all curves from the plot ( cleaning the graph
)<br class="" id="yui_3_16_0_1_1452629940461_2749">
<br class="" id="yui_3_16_0_1_1452629940461_2751">
For now I have a small bug to fix: after some scrolls ( Zoom In ), the Top X
axis and Bottom X axis values become the same. ( the delay for the Top X Axis disappears
). So I'm trying to solve it. I will post a new patch with all these achievements
immediately after I solve this bug.<br class="" id="yui_3_16_0_1_1452629940461_3078">
Next, I will search and implement a method to show curves' name in the chart,
and I also have to compute and indicate the Rise/Transit/Set points on the
curve. Regarding the gradient, I will leave it at the end. <br><br>Raphael<br></div>
<div id="yui_3_16_0_1_1452629940461_3080" class=""> </div><div dir="ltr">
</div></div></body></html>