I have the following code in the setup procedure in netlogo
set-default-shape Mappers "target"
create-mappers MappersCounterSlider
[
set color red
set size 1.5 ;; easier to see
set label-color blue - 2
set xcor 10
set ycor random 11
]
I need to change the random 11 to a specific value for each turtle I create, for example if I have 5 turtles I want to have 5 turtles in diffrent 5 fixed positions.
If you need specific y coordinates for each turtle I am afraid you are going to have to set them yourself.
If you don't care about which turtle is at which y coordinate, you can have a list of possible y coordinates, which each turtle will then remove from to determine their y-coordinate
For example, if you needed the turtles to start at y coordinates 1, 2, 5, 8 and 9, create a list:
let y-coordinates (list 1 2 5 8 9)
Then when you create your turtles, set their y coordinate to be a random element removed from the list.
let remove-index random length y-coordinates
set ycor item remove-index y-coordinates
set y-coordinates remove-item remove-index y-coordinates
That way, if you want to add any more fixed y-coordinates, you can simply add it to the list.
You can also specify the position during the create process by incrementing a global variable. Like the following:
globals [posn]
to setup
set posn -10
create-turtles 5
[
set color red
set size 1.5 ;; easier to see
set label-color blue - 2
set xcor 10
set posn posn + 3
set ycor posn
]
end
Related
I'm working on a project in which an + sign moves in animation according to the x and y coordinates on the page
Everything is fine so far.
Now I want to raise two issues: The first issue is that the beginning of the coordinate axis or point (0,0) is in the upper left corner of the page. I need to be able to move this coordinate origin in the four corners of the page if needed.
Problem 2: The + sign that moves in animation varies from 0 to 1400 in the x coordinates and from 0 to 900 in the y coordinates, while I have to display this value on the 340x290 page, how do these coordinate matches work?
Programming is in lua language.
Edit 1:
Screenshot
This sign (+) should move on the specified screen with dimensions of 290x340, according to the values of x and y at the top right of the screen. The values x and y shown at the top right are in millimeters, which can be from 0 to 900 mm for x and 0 to 1500 mm for y.
How to match a 0 to 900mm and 0 to 1500mm motion on a 290x340 pixel screen?
Thanks for each reply
I am trying to visualize a time series data set on one plot as a pseudo 3d figure. However, I am having some trouble getting the filledcurves capability working properly. It seems to be adding an unwanted border at the "bottom" of my functions and I do not know how to fix this.
This is my current set up: I have nb_of_frames different files that I want to plot on one figure. Without the filledcurves option, I can do something like this
plot for [i=1:nb_of_frames] filename(i) u ($1):(50.0 * $2 + (11.0 - (i-1)*time_step)) w l linewidth 1.2 lt rgb "black" notitle
which produces a figure like this:
no fill options
Instead of doing this, I want to use the filledcurves option to bring my plots "forward" and highlight the function that is more "forward" which I try to do with:
plot for [i=1:nb_of_frames] filename(i) u ($1):(50. * $2 + (11. - (i-1)*time_step)) w filledcurves fc "white" fs solid 1.0 border lc "black" notitle
This produces a figure as follows:
This is very close to what I want, but it seems that the border option adds a line underneath the function which I do not want. I have tried several variants of with filledcurves y1=0.0 with different values of y1, but nothing seems to work.
Any help would be appreciated. Thank you for your time.
Here is another workaround for gnuplot 5.2.
Apparently, gnuplot closes the filled area from the last point back to the first point. Hence, if you specifiy border, then this line will also have a border which is undesired here (at least until gnuplot 5.4rc2 as #Ethan says).
A straightforward solution would be to plot the data with filledcurves without border and then again with lines. However, since this is a series of shifted data, this has to be plotted alternately. Unfortunately, gnuplot cannot switch plotting styles within a for loop (at least I don't know how). As a workaround for this, you have to build your plot command in a previous loop and use it with a macro # (check help macros) in the plot command. I hope you can adapt the example below to your needs.
Code:
### filledcurves without bottom border
reset session
set colorsequence classic
$Data <<EOD
1 0
2 1
3 2
4 1
5 4
6 5
7 2
8 1
9 0
EOD
myData(i) = sprintf('$Data u ($1-0.1*%d):($2+%d/5.)',i,i)
myFill = ' w filledcurves fc "0xffdddd" fs solid 1 notitle'
myLine = ' w l lc rgb "black" notitle'
myPlotCmd = ''
do for [i=11:1:-1] {
myPlotCmd = myPlotCmd.myData(i).myFill.", ".myData(i).myLine.", "
}
plot #myPlotCmd
### end of code
Result:
I can reproduce this in gnuplot 5.2.8 but not in the output from the release candidate for version 5.4. So I think that some bug-fix or change was applied during the past year or so. I realize that doesn't help while you are using verion 5.2, but if you can download and build from source for the 5.4 release candidate that would take care of it.
Update
I thought of a work-around, although it may be too complicated to be worth it.
You can treat this as a 2D projection of a 3D fence plot constructed using plot style with zerrorfill. In this projection the y coordinate is the visual depth. X is X. Three quantities are needed on z: the bounding line, the bottom, and the top. I.e. 5 fields in the using clause: x depth zline zbase ztop.
unset key
set view 90, 180
set xyplane at 0
unset ytics
set title "3D projection into the xz plane\nplot with zerrorfill" offset 0,-2
set xlabel "X axis" offset 0,-1
set zlabel "Z"
splot for [i=1:25] 'foo.dat' using ($1+i):(i/100.):($2-i):(-i):($2-i) \
with zerrorfill fc "light-cyan" lc "black" lw 2
Scenario: I need to draw a plot that has a background image. Based on the information on that image there have to be multiple origins (let's call them 'targets') that can move over time. The movements of these targets will have to be indicated by arrows/vectors where the first vector originates at the location of the target, the second vector originates where the previous vector ended and so on.
The result should look similar to this:
Plot with targets and movement vectors
While trying to implement this, i stumbled upon different questions:
I would use a chart with combined series: a Scatter plot to add the targets at exact x/y locations and a vector plot to insert the vectors. Would this be a correct way?
Since i want to set each vectors starting point to exact x/y coordinates i use rotationOrigin: 'start'. When i now change vectorLength to something other than 20 the vector is still shifted by 10 pixels (http://jsfiddle.net/Chop_Suey/cx35ptrh/) this looks like a bug to me. Can it be fixed or is there a workaround?
When i define a vector it looks like [x, y, length, direction]. But length is a relative unit that is calculated with some magic relative to the longest vector which is 20 (pixels) by default or whatever i set vectorLength to. Thus, the vectors are not connected and the space between them changes depending on plot size axes min/max). I actually want to corellate the length with the plot axis (which might be tricky since the x-axis and y-axis might have different scales). A workaround could be to add a redraw event and recalculate the vectors on every resize and set the vectorLength to the currently longest vector (which again can be calculated to correlate to the axes). This is very cumbersome and i would prefer to be able to set the vectors somehow like [x1, y1, x2, y2] where (x1/y2) denotes the starting- and (x2/y2) the ending-point of the vector. Is this possible somehow? any recommendations?
Since the background image is not just a decoration but relevant for the displayed data to make sense it should change when i zoom in. Is it possible to 'lock' the background image to the original plot min/max so that when i zoom in, the background image is also zoomed (image quality does not matter)?
Combining these two series shoudn't be problematic at all, and that will be the correct way, but it is necessary to change the prototype functions a bit for that the vectors will draw in a different way. Here is the example: https://jsfiddle.net/6vkjspoc/
There is probably the bug in this module and we will report it as new issue as soon as it is possible. However, we made the workaround (or fix) for that and now it's working well, what you can notice in example above.
Vector length is currently calculated using scale, namely - if vectorLength value is equal to 100 (for example), and vector series has two points which looks like that:
{
type: 'vector',
vectorLength: 100,
rotationOrigin: 'start',
data: [
[1, 50000, 1, 120],
[1, 50000, 2, -120]
]
}
Then the highest length of all points is taken and basing on it the scale is calculated for each point, so first one length is equal to 50, because the algorithm is point.length / lengthMax, what you can deduce from the code below:
H.seriesTypes.vector.prototype.arrow = function(point) {
var path,
fraction = point.length / this.lengthMax,
u = fraction * this.options.vectorLength / 20,
o = {
start: 10 * u,
center: 0,
end: -10 * u
}[this.options.rotationOrigin] || 0;
// The stem and the arrow head. Draw the arrow first with rotation 0,
// which is the arrow pointing down (vector from north to south).
path = [
'M', 0, 7 * u + o, // base of arrow
'L', -1.5 * u, 7 * u + o,
0, 10 * u + o,
1.5 * u, 7 * u + o,
0, 7 * u + o,
0, -10 * u + o // top
];
return path;
}
Regarding your question about defining start and end of a vector by two x, y values, you need to refactor entire series code, so that it won't use the vectorLength at all as like as scale, because you will define the points length. I suspect that will be very complex solution, so you can try to do it by yourself, and let me know about the results.
In order to make it works, you need to recalculate and update vectorLength of your vector series inside of chart.events.selection handler. Here is the example: https://jsfiddle.net/nh7b6qx9/
So i have this sample pdf file with three words on separate lines:
"
hello
there
world
"
I have highlighted the word "there" on the second line. Internally, within the pdf, i'm trying to map the highlight/annotation structure to the text (BT) area.
The section corresponding to the word "there" looks like so:
BT
/F0 14.6599998 Tf
1 0 0 -1 0 130 Tm
96 0 Td <0057> Tj
4.0719757 0 Td <004B> Tj
8.1511078 0 Td <0048> Tj
8.1511078 0 Td <0055> Tj
4.8806458 0 Td <0048> Tj
ET
I also have an annotation section where I have my highlight which has the following rect dimensions:
18 0 19 15 20 694 21 786 22 853 23 1058 24 1331 [19 0 R 20 0 R]<</AP<</N 10 0 R>>
...
(I left the top part of the annotation out on purpose because it is long. I extracted what i thought were the most important parts.
Rect[68.0024 690.459 101.054 706.37]
I'm kind of confused about how my text is mapped to this one highlight that I have. The coordinates do not seem to match (130 y vs 690 y)? Am I looking in the right place and interpreting my text and/or highlight annotation coordinates correctly?
Update:
i want to add more info on how I created this test pdf.
Its pretty simple to recreate the pdf. I went to google docs and created an empty document. On three lines i wrote my text as described above. I downloaded that as a pdf and then opened it in adobe acrobat reader DC (the newest one i think). I then used adobe acrobat reader to highlight the specified line and re save it. After that I used some python to unzip the pdf sections.
The python code to decompress the pdf sections:
import re
import zlib
pdf = open("helloworld.pdf", "rb").read()
stream = re.compile(r'.*?FlateDecode.*?stream(.*?)endstream', re.S)
for s in stream.findall(pdf):
s = s.strip('\r\n')
try:
print(zlib.decompress(s))
print("")
except:
pass
Unfortunately the OP only explained how he created his document and did not share the document itself. I followed his instructions but the coordinates of the annotation differ. As I only have this document for explanation, though, the OP will have to mentally adapt the following to the precise numbers in his document.
The starting coordinate system
The starting (default) user coordinate system in the document is implied by the crop box. In the document at hand the crop box is defined as
/CropBox [0 0 596 843]
i.e. the visible page is 596 units wide and 843 units high (given the default user unit of 1/72" this is an A4 format) and the origin is in the lower left corner. x coordinates increase to the right, y coordinate increase upwards. Thus, a coordinate system as usually started with in math, too.
The annotation rectangle
This also is the coordinate system of the annotation rectangle coordinates.
In the case at hand they are
/Rect [68.0595 741.373 101.138 757.298]
i.e. the rectangle with the lower left corner at (68.0595, 741.373) and the upper right at (101.138, 757.298).
Transformations of the coordinate system
In the page content stream up to the text object already identified by the OP the coordinate system gets transformed a number of times.
Mirroring, translation
In the very first line of the page content
1 0 0 -1 0 843 cm
This transformation moves the origin up by 843 units and mirrors (multiplies by -1) the y coordinate.
Thus, now be have a coordinate system with the origin in the upper left and y coordinate increasing downwards.
Scaling
A bit later in the content stream the coordinate system is scaled
.75062972 0 0 .75062972 0 0 cm
Thus, the coordinate units are compressed to about 3/4 of their original width and height, i.e. each unit along the x or y is only 1/96" wide/high.
The text "there"
Only after these transformations have been applied to the coordinate system, the text object identified by the OP is drawn. It starts by setting and changing the text matrix:
1 0 0 -1 0 130 Tm
This sets the text matrix to translate by 130 units in y direction and mirroring y coordinates once again. (Mirroring back again is necessary as otherwise the text would be drawn upside down.)
96 0 Td
This changes the text matrix by moving 96 units along the x axis.
And the starting point where the text is drawn is at the origin of the coordinate system first changed by the mirroring and translation, and then by scaling of the current transformation matrix, and then by mirroring and translation according to the text matrix.
Does it match?
Which coordinate would this point be in the default user coordinate system?
x = (0 + 96) * .75062972 = 72 (approximately)
y = (((0 * (-1)) + 130) * .75062972) * (-1) + 843 = 745,4 (approximately)
This matches with the annotation rectangle (see above) with x coordinates between 68.0595 and 101.138 and y coordinates between 741.373 and 757.298.
So
I'm kind of confused about how my text is mapped to this one highlight that I have. The coordinates do not seem to match (130 y vs 690 y)? Am I looking in the right place and interpreting my text and/or highlight annotation coordinates correctly?
The coordinates do match, you merely have to make sure you apply the transformations of the current transformation matrix and the text matrix.
Please refer the fiddle codehttp://jsfiddle.net/yuvarajkumarg/az290eyq/1/
In Highchart of type Chart, when we plot for height = 0 and pressure = 2, we get a gap as shown in jsfiddle. I want point to be plotted on the X-axis(2,0). But the graph looks like it is plotted on (2,2) since the y-axis plot starts way above the x-axis. How to remove the gap ?
The issue is the categorized axis.
There are probably a few ways around the issue, but I would do it this way (on your xAxis):
tickmarkPlacement: 'on',
min:0.5,
max:6.5
Example:
http://jsfiddle.net/az290eyq/2/
You could also do it by not using categories, and using the axis label formatter in order to display the numeric sequence that you need.
[[ edit for comments:
For the min and max values - the x axis values for a categorized axis are the category array index values. So the first category is x = 0, the second is x = 1, etc.
Because Highcharts puts the the label in the center of the value's space, setting the min/max to the actual min/max value +/- 0.5 will align the center of the space with the start/end of the axis.
So, you can calculate this dynamically by using 0.5 for the min, and counting the categories array and using (count -1.5) as the max.
Additionally, setting the tickmarkPlacement proerty to 'on' moves the tick mark to the center of the space as well, aligning the ticks with the start/end of the axis as well.