olzvirgin.blogg.se - Topcat well service

Now small spheres are drawn with their radius indicating the mass of each halo!Įnhance the plot by choosing Shading Mode “transparent” instead of “flat”. At “Coordinates – Size:” choose the BolshoiP_BDMV_Mvir-column. To make things more interesting, click on the “Form” tab and choose the “Add size mark” icon. You can see now the 3D distribution of the most massive BDMV-halos in the cosmological box! In the “Position” tab (default) choose your table from the “Table” drop-down menu and choose following axes: In Topcat, your table now appears in the “Table List”.Click on the link “Register with a local SAMP Hub”, authorize the connection and hit “Send table to topcat”. Go back to CosmoSim and switch to the SAMP-tab of the query interface.Consult Topcat’s documentation for more details. Leave the web browser open and start Topcat.You should see a list of the 50 most massive halos from the BDMV-catalogue of the BolshoiP simulation, sorted by mass ( Mvir column).

Once the query is finished, navigate to the “Results table” tab.

SELECT * FROM BolshoiP.BDMV WHERE snapnum=214 ORDER BY Mvir DESC LIMIT 50Īnd submit it to the Short Queue by pressing the “Submit new SQL Query” button.

Write following query into CosmoSim’s query interface:.Here’s an example for plotting the 50 most massive halos (at redshift 0) from three halo catalogues of the BolshoiP simulation, using Topcat’s version 4.1: Screenshot of the SAMP tab, after enabling the script and authorizing the connection.