Trendline PSX: how to draw one, log or linear

A trendline (trendline kaise banayen) is a straight line through two or more swing lows, for an uptrend line, or swing highs, for a downtrend line. To draw one on a PSX chart in SuperX Charts, open a symbol in Pro, press Alt+T for the Trend line, click the two swing points, and press L for the log scale if the line spans more than a year. A worked example, with data as of 9 October 2026: on the KSE-100’s daily closes, the lows of 16 February 2024 (59,872.96) and 8 May 2025 (103,526.82) give a line with no close beneath it on a log scale. The same two points joined on a normal scale have 22 closes beneath the line.

What is a trendline, and which points count?

A trendline joins points. It does not forecast anything. It is a way to describe a run of rising lows or falling highs, so that you can see how far a price has stayed on one side of a line.

Two ideas make the definition usable:

• A swing low is a bar whose low is lower than the bars on each side of it. A swing high is the mirror. How many bars on each side is a choice. The examples below use a swing low as the lowest close in a window of 30 sessions before and after.
• Two points fix a line. A third point that touches the same line is usually called a test of it. The more times a price has touched a line without closing through it, the more traders say they respect it. That is a convention of chart reading and not a law, and a long line with many touches can still end.

Different people pick different swing points from the same chart, so two honest trendlines on one share can differ. Read each line as one person’s description.

How do you draw a trendline in SuperX Charts?

SuperX Charts’ drawing guide says Pro has 72 drawing tools in 13 families. The two you need first are in the Lines and Channels families. The steps for a trend line:

1. Open a symbol in Pro, such as HBL on a one-year chart.
2. Press Alt+T, or click the Lines button on the left rail. It arms the tool you used last in that family.
3. Click the first swing point, then the second. The hint line under the chart says how each tool is placed, and a readout beside the pointer shows the change as you move.
4. Press Esc to put the tool down. Click the line to select it and drag a handle to move one point.

Three controls help you place a line well:

• Magnet snaps a point to the open, high, low or close of a bar. Weak snaps within 12 pixels, and Strong always snaps.
• In the line’s Settings, the Coordinates tab lets you type each point’s price and date. The price steps by the exchange’s tick, and the date picker offers trading days only.
• Each point is a time and a price. So a line stays on the same bars when you change the interval from daily to weekly.

The same family holds the Ray (Alt+R), the Extended line (Alt+E) and the Horizontal line (Alt+H). A ray and an extended line run on past your second point, and that is what you need if you want to see where the line sits today.

Does a trendline change on a log scale?

Yes, and for a long line the change is large. On a normal price scale the same distance up the screen is the same number of points. On a log scale it is the same percentage. A straight line on a normal scale therefore climbs by a fixed number of points a day, and a straight line on a log scale climbs by a fixed percentage a day. The two lines agree at the points you click and drift apart everywhere else.

The table shows this with real closes. The example takes the KSE-100’s daily closes from the SuperX snapshot, dated 9 October 2026, and joined the same two swing lows both ways: 16 February 2024 at 59,872.96 and 8 May 2025 at 103,526.82. That is 447 calendar days and 300 sessions.

	Straight on a normal scale	Straight on a log scale
What stays constant	97.66 points a day (about 35,646 a year)	about 56.4% a year, compounded
Closes below the line, between the two points	22 of 300	0 of 300
Line value on 1 Nov 2024 (close 90,859.85)	85,167	82,230
Deepest close below the line	1.9% below, on 11 Sep 2024	none
Line value on 9 Oct 2026 (close 167,089.27)	154,212	195,516

Two readings follow. First, a line drawn through those two lows only holds as support on the log scale. The straight line on the normal scale cuts through 22 closes, all between 19 August and 2 October 2024, because the index was compounding and the line was not. Second, the last row shows what happens when you extend each line to the right. The two extensions are 41,300 points apart on 9 October 2026. Neither number is a forecast. The gap is the reason to choose the scale before you draw, and to turn Log on for any line longer than a year or two. The KSE-100 chart guide covers the log or linear choice for the index.

The closes in the example come from a daily series for an index. SuperX Charts draws an index as candles only where the exchange’s record has a high and a low, and otherwise as a line. On a share you would normally set a point on a bar’s low or high. The method is the same.

To see this yourself, open the KSE-100 on a five-year log scale, draw a trend line between the February 2024 and May 2025 lows, and press L to switch scales. The KSE-100 share page gives the index’s latest dated close.

How do you draw a parallel channel?

A parallel channel is a trendline with a second line drawn parallel to it on the other side of the price, so that the price runs between two lines. In SuperX Charts it is the Parallel channel tool, key Alt+C, in the Channels family. Its siblings in that family are Regression trend, Flat top/bottom and Disjoint channel.

The hint line under the chart says where to click for the tool you armed, so the clicks are not repeated here: the tool’s own hint is the exact source. Once placed, a channel behaves like any drawing: select it, drag a handle, change its colour in the bar over it, or lock it with the lock button on the rail.

A channel adds one thing a single line cannot give. It marks where the price has stayed at the other extreme too, so you can see the width of the swings in rupees or in percent. On a long channel, use the log scale for the same reason as above.

Can SuperX Charts draw the trendline for me?

On request, yes. At the end of the rail, Auto draw has a Trend lines & channels item, which the guide describes as lines through swing points that no close crossed. Nothing is drawn when a chart opens. Each automatic drawing carries its evidence and the line “An automatic drawing from past prices — not financial advice.” If the evidence is thin, the tool says “Not enough evidence — nothing drawn” and gives the reasons. An edit makes the drawing your own, and Clear auto drawings removes the ones you did not edit.

Drawing your own line first, and then comparing it with the automatic one, is a good way to learn which swing points matter on a given share.

How do you get an alert when the price crosses your line?

Select the line and click the bell in the bar over it. The alert fires when the close crosses the line. A line that ends before the newest bar has nothing to cross, so use a ray or an extended line. A line on 2-hour or longer intraday bars is checked in the browser tab only. The post on free PSX price alerts lists every kind of alert and the limits of the server check.

Does a trendline predict a breakout?

No. A trendline describes where a price has been. The extension of a line is a drawing, not a measurement. In the KSE-100 example above, 72 of the 355 closes after 8 May 2025 up to 9 October 2026 fell below the log-scale line, and none fell below the normal-scale line. That is a fact about the past that depends entirely on which two points and which scale you chose. It says nothing about the next close.

SuperX publishes no signals. Use a line to ask a better question, such as “how far below this line did the price close, and for how many sessions?”, and answer it from the bars. Two other pages on this site show the same history without drawings: the KSE-100 page and the OGDC chart page. To practise on a share, the HBL and OGDC share pages give a dated close and a link into the chart. For the price-adjustment rules behind a share’s long history, read how bonus shares are adjusted on a PSX chart.

Frequently asked questions

How many points do you need to draw a trendline?

Two points fix a line. Chart readers usually want a third touch before they call it a tested line, but that is a convention, not a rule.

Should I draw a trendline on a log or a linear scale?

For a line that spans more than a year or two, use the log scale. A straight line on it rises by a constant percentage, which suits a price that moves in percentages. SuperX Charts switches scales with the L key.

What is the difference between a trendline and a channel?

A trendline is one line through swing points. A channel adds a second, parallel line on the other side of the price. In SuperX Charts the channel tool is Parallel channel, key Alt+C.

Does SuperX Charts draw trendlines automatically?

Only when you ask. Auto draw has a Trend lines & channels item that draws lines through swing points no close crossed. It says “Not enough evidence — nothing drawn” when its tests fail.

Can a trendline tell me where a price will go?

No. It describes past bars. Where it is extended, the line is a drawing, and two lines through the same points can sit more than 40,000 index points apart 17 months later.

Education, not investment advice.