I need a pinescript code for below scenario. Can anyone help please...
tEma=(close,25)
if current candle crossesover tEma
then calculate close price minus tEma price(value)close-tEMA
if the value is <5, bgcolor it should be green with 80% transparency. Else NA.
likewise
if current candle crossesbelow tEma
then calculate difference between tEma-close
if the value is <5, bgcolor should be red with 80% transparency. Else NA.
will be grateful for the help
Can you put your script in code and what exactly your trying to do?
Related
I want to draw a line , extended right, on the Low of the pivot high candle and at High of the pivotlow, as applicable in the running market, can anyone suggest a little code which does that? . we should also delete history to make the chart clear. I am new in pine script
This is my inquiry (edited):
I try to plot a monthly graphic using Charts, but I face some difficulties to put the names of the months on the X axis. My default value is like in the next image:
default value
And after using the most upvoted answer from here, I got this
So after investing some hours with futile results I'd like to ask you if you know how to get a plot similar to this one, please. So to summarize:
Put the names of the months on the x axis (Vertical, not horizontal as in the figure)
Plot the months' names on the base of the graphic, not on the top as seen on the default value
Thanks in advance. If you need some of my code, I can share it with you.
Kind regards.
After playing around and with a better research, this is the answer to my questions:
//Give the value of the months to the x axis
barChart.xAxis.valueFormatter = IndexAxisValueFormatter(values:months)
barChart.xAxis.granularity = 1
//Position of the x axis, rotation of the labels on the x axis and show all the names of the months consecutively
barChart.xAxis.labelPosition = XAxis.LabelPosition.bottom
barChart.xAxis.labelRotationAngle = -90.0
barChart.xAxis.setLabelCount(counter, force: false)
I have this column chart that has 2 modes, monthly visualization and yearly visualization, the monthly visualization works just fine with many column, however, my yearly visualization is broken because i can't get the only column that appears to be on the center of the chart, it's always being set to the first point on my XAxis.
If I were using a NumberAxis it would be easy to solve, just set the column to the middle point (in this case, position 6 among the total of 12 months). However I'm using CategoryAxis, since it isn't ordered as NumberAxis is, I'm unable to use the same solution....
How can I achieve this result with a CategoryAxis ?
PS: No matter the SChartRange I set to this Axis, the column will always be set to the first position in the XAxis.
Found a way to achieve the result I wanted.
I've altered the range to be around the first dataPoint only, this way the column got placed in the middle of the chart without having to be the "middle dataPoint", being the ONLY dataPoint. The code goes into my sChart: dataPointAtIndex forSeriesAtIndex as follows
-(id<SChartData>)sChart:(ShinobiChart *)chart dataPointAtIndex:(int)dataIndex forSeriesAtIndex:(int)seriesIndex{
.
.
.
SChartNumberRange * numberRange;
if(isYearlyChart){
numberRange = [[SChartNumberRange alloc] initWithMinimum:[NSNumber numberWithFloat:-0.9]andMaximum:[NSNumber numberWithInt:(1)]];
}
The normal NumberRange I was using was from 1 through 13.
Hope this helps others with similar problems regarding this subject :)
PS: I'll mark this as the correct answer as soon as possible.
I want to display overlapping boxplots using Sigmaplot 12. When I choose the scale for the x-axis as linear then the boxes do indeed overlap but are much too thin. See figure below. Of course they should be much wider.
When I choose the scale of the x-axis to be "category", then the boxes have the right width, but are arranged along each single x-value.
I want the position as in figure 1 and the width as in figure 2. I tried to resize the box in figure 1 but when I choose 100% in "bar width" than it still looks like Figure 1.
many thanks!
okay, I found the answer myself. In Sigmaplot, there is often the need to prepare "style"-columns, for example if you want to color your barcharts, you need a column that holds the specific color names.
For my boxplot example I needed a column that has the values for "width". These had to be quite large (2000) in order to have an effect. Why ? I have no idea. First I thought it would be because of the latitude values and that the program interprets the point as "1.000"s, but when I changed to values without decimals, it didn´t get better.
Well, here is the result in color.
Have fun !
For image scanning purposes, I'd like a pixel (which I can get from a UIImage) to match (for a certain percentage) to a pre-set color.
Say pink. When I scan the image for pixels that are pink, I want a function to return a percentage of how much the RGB value in the pixel looks like my pre-set RGB value. This way I'd like all (well, most) pink pixels to become 'visible' to me, not just exact matches.
Is anyone familiar with such an approach? How would you do something like this?
Thanks in advance.
UPDATE: thank you all for your answers so far. I accepted the answer from Damien Pollet because it helped me further and I came to the conclusion that calculating the vector difference between two RGB colors does it perfectly for me (at this moment). It might need some tweaking over time but for now I use the following (in objective c):
float difference = pow( pow((red1 - red2), 2) + pow((green1 - green2), 2) + pow((blue1 - blue2), 2), 0.5 );
If this difference is below 85, I accept the color as my target color. Since my algorithm needs no precision, I'm ok with this solution :)
UPDATE 2: on my search for more I found the following URL which might be quite (understatement) useful for you if you are looking for something similar.
http://www.sunsetlakesoftware.com/2010/10/22/gpu-accelerated-video-processing-mac-and-ios
I would say just compute the vector difference to your target color, and check that it's norm is less than some threshold. I suspect some color spaces are better than others at this, maybe HSL or L*ab, since they separate the brightness from the color hue itself, and so might represent a small perceptual difference by a smaller color vector...
Also, see this related question
Scientific answer: You should convert both colors to the LAB color space and calculate the euclidian distance there. That value is also called deltaE.
The LAB space was developed (using test persons) for exactly that reaason: so that different color pairs with equal distances in tnis space correspond to equal perceived color differences.
However, it sounds like you are not looking for matching a specific color, but rather a color range (lets say all skin tones). That might require more user input than just a reference color + a deltaE tollerance:
a reference color with 3 tollerances for hue, saturation and brightness
a cloud of refence color samples
...