So basically there is no difference between an horizontal resistance and a trendline resistance. If the price hold the line it is OK to consider it a resistance / support point . . .
Hi CallMePaul,
This is a contentious subject in as much as there are many traders who will argue until they are blue in the face that trend lines provide support and resistance (S/R) and that price is in some way subservient and respectful of these all powerful and magical lines. I take the opposite view. For a new trader, I would advocate airing on the side of caution to start with and assume that the lines are just lines and not invest more in them than they were originally designed for. If, having studied them in detail, and with a steadily rising equity curve, you decide that they do indeed possess magical powers - that's fine. For now, treat trend and S/R as two completely separate things that serve two completely separate purposes.
Let's start with trend. A trend line, be it one that's hand drawn by the trader or a moving average (MA) overlaid on a chart by the software, simply indicates whether the trend is up, down or sideways. Nothing more. If this is all you ask of the lines - they will serve you well. Keep it simple. Note where the current price is in relation to the trend line. For example, if price is a long way above a rising trend line, do you want to be long or short the market? Received wisdom says trade with the trend and, in this case the trend is up, so your answer might be to go long. However, price rarely stays a long way above a rising trend line for long, indicating that the market might be overbought. A pullback or, even, a reversal is more probable than not, indicating that you might do well to sit on your hands for the time being or look for opportunities to go short.
I would advise any trader to rid themselves completely of the notion of price 'doing' anything at any line of any type drawn on a chart. Prices change because that's where traders are buying and selling. It's the
price that offers S/R, the drawn line is merely a simple graphical representation to show where key prices are. It's an obvious comment to make I know, but traders do tend to get caught up in the lines themselves - rather than what the lines represent. S/R lines then, unlike trend lines, relate to a specific price level. As such they must be horizontal. Sometimes, quite often in fact, support will hold and price will reverse back up and, when it does, it will coincide with a rising trend line. This is coincidence and inevitable to some extent. The one possible exception to this is the 50 MA and 200 MA on a daily chart, as they are so widely used that they are self-fulfilling. Sometimes!
The bottom line is: separate out the two functions and keep them apart. They are to the trader what red and green are to the artist. Mix the two colours together and all you get is a dirty muddy brown colour. Ask your trend lines to indicate the trend and nothing more. Draw your S/R lines according to previous key levels where price has reversed, as these levels
may prove to be important levels again in the future. Note 'may'!
Tim.