Hi Marc,
how do you represent on the coarray map only the positive part of the rings?
Thank you
Luigi
semi rings on the coarray map
Re: semi rings on the coarray map
Hi Luigi,
If I correctly understand your question, the coarray plot is by definition from 0 to 180 deg. For each pair of stations, the direction of the vector joining the two stations is reduced to the interval 0 to 180 deg. If A and B are two stations, the vector from A to B is equivalent to the vector from B to A in the coarray plot. Each pair is represented by its direction from 0 to 180 deg and its interdistance.
Best regards,
Marc
If I correctly understand your question, the coarray plot is by definition from 0 to 180 deg. For each pair of stations, the direction of the vector joining the two stations is reduced to the interval 0 to 180 deg. If A and B are two stations, the vector from A to B is equivalent to the vector from B to A in the coarray plot. Each pair is represented by its direction from 0 to 180 deg and its interdistance.
Best regards,
Marc
Re: semi rings on the coarray map
Hi Marc,
Sorry if I expressed myself in an unclear way, but the question is much more practical: how to represent only the positive part in the plot of the coarrays. Working on the Property editor I could not find a way to remove the negative part and in the end to get only semicircles instead of whole circles.
Sorry if I expressed myself in an unclear way, but the question is much more practical: how to represent only the positive part in the plot of the coarrays. Working on the Property editor I could not find a way to remove the negative part and in the end to get only semicircles instead of whole circles.
 Attachments

 coarray.jpg
 (67.23 KiB) Not downloaded yet
Re: semi rings on the coarray map
Hi Luigi,
OK, I better understand your question. For these plots the X and Y axes are "Scaled", that is, their size is proportional to the difference between the max and the min value of the axis and to a user defined scale factor (by default the same for X and Y). The maximum axis value is controlled by the user in the properties box, however the minimum value of Y axis is controlled by the screen size of the window enclosing the plot. Resize the window so that the minimum reaches 0. Another way is to switch to "Total size" or "Axis size" for "Size" in properties "Y Axis/Scale". Then, set minimum Y to 0. Unfortunately, the X and Y scales are no longer equal which produced a deformed plot.
Best regards,
Marc
OK, I better understand your question. For these plots the X and Y axes are "Scaled", that is, their size is proportional to the difference between the max and the min value of the axis and to a user defined scale factor (by default the same for X and Y). The maximum axis value is controlled by the user in the properties box, however the minimum value of Y axis is controlled by the screen size of the window enclosing the plot. Resize the window so that the minimum reaches 0. Another way is to switch to "Total size" or "Axis size" for "Size" in properties "Y Axis/Scale". Then, set minimum Y to 0. Unfortunately, the X and Y scales are no longer equal which produced a deformed plot.
Best regards,
Marc
Re: semi rings on the coarray map
Hi Marc,
I followed your instructions both by modifying the scale factor to bring minimum y = 0, and by acting on the total size of the y axis. In both cases the ring is a deformed semicircle, as you said. I was hoping for Property box / object, but the dimensions of the object are not editable so I found a solution, for exporting the image of the rings, manually moving, with the mouse, the base of the window up to the value of y = 0 .
Therefore it would be sufficient to modify the default representation of the coarrays (scale factor 1) to obtain the semicircles.
I also recorded that reopening Geopsy with different gpy files the program keeps the setting with the y axis = 0m for the coarrays map.
luigi
I followed your instructions both by modifying the scale factor to bring minimum y = 0, and by acting on the total size of the y axis. In both cases the ring is a deformed semicircle, as you said. I was hoping for Property box / object, but the dimensions of the object are not editable so I found a solution, for exporting the image of the rings, manually moving, with the mouse, the base of the window up to the value of y = 0 .
Therefore it would be sufficient to modify the default representation of the coarrays (scale factor 1) to obtain the semicircles.
I also recorded that reopening Geopsy with different gpy files the program keeps the setting with the y axis = 0m for the coarrays map.
luigi
 Attachments

 Mspac_rings.jpg
 (95.83 KiB) Not downloaded yet
Last edited by luigiV on Tue Oct 04, 2022 8:01 am, edited 1 time in total.