Problem getting If statement to work properly

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Problem getting If statement to work properly

Problem getting If statement to work properly

Author	Message
DCole9	DCole9 posted 10 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 42, Visits: 220	I'm having a problem getting the following if statement to change a value correctly. I want to check the random position variable, the last trial's response, and the random demand variable to assign the location of the next stimulus. All of the if statement conditions look correct in the log file but yet it does not pass as "true" and set the values accordingly. "/ontrialbegin = [if ((values.randomposition == 1) && (values.response == "patch1") && (values.randomdemand == "lowpatch1" )) {values.lownumbery = 40%; values.highnumbery = 60%}]" Additionally I'm having similar problem but using an if statement to insert stimulus frames. An example is- /ontrialbegin = [if ((values.randomposition == 1) && (values.response == patch2) && (values.randomdemand == "lowpatch1")) {trial.patchtrial.setstimulusframe(focus, 1); trial.patchtrial.insertstimulusframe(choose, 1); trial.patchtrial.insertstimulusframe(highnumber, 1); trial.patchtrial.insertstimulusframe(blankpatch2, 1); trial.patchtrial.insertstimulusframe(patch1, 1); }]" Attachments DemandSelection.iqx (241 views, 31.00 KB)
	Reply Like 51
Dave	Dave posted 10 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 104K	If you want to check if or if not any of your conditions evaluates to true, you can add <expressions> /c1 = ((values.randomposition == 1) && (values.response == "patch1") && (values.randomdemand == "lowpatch1" )) /c2 = ((values.randomposition == 1) && (values.response == "patch2") && (values.randomdemand == "highpatch1" )) /c3 = ((values.randomposition == 2) && (values.response == "patch1") && (values.randomdemand == "lowpatch1" )) /c4 = ((values.randomposition == 2) && (values.response == "patch2") && (values.randomdemand == "highpatch1" )) </expressions> to the script and log those expressions to the data file. You will find that you not all that can conditions are covered by your conditions. This is for example the case with ((values.randomposition == 1) && (values.response == "patch1") && (values.randomdemand == "highpatch1")) A statement such as /ontrialbegin = [if ((values.randomposition == 1) && (values.response == patch1) && (values.randomdemand == "lowpatch1")) will fail to evaluate to true due to missing double-quotes.
	Reply Like 35
DCole9	DCole9 posted 10 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 42, Visits: 220	Thanks for the tip with the expressions Dave that helped. I'm receiving some errors with inserting the stimulus frames even though the if statements are returning true. Is there something wrong with the syntax? "/ontrialbegin = [if ((values.randomposition == "1") && (values.response == "patch1") && (values.randomdemand == "lowpatch1")) {trial.patchtrial.setstimulusframe(focus, 1); trial.patchtrial.insertstimulusframe(choose, 1); trial.patchtrial.insertstimulusframe(lownumber, 1); trial.patchtrial.insertstimulusframe(blankpatch1, 1); trial.patchtrial.insertstimulusframe(patch2, 1)}]"
	Reply Like 58
Dave	Dave posted 10 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 13K, Visits: 104K	What are those errors specifically? Note that the syntax in the functions is partly incorrect: Suppose you want to set a <text> stimulus called mytext. Then that's setstimulusframe(text.mytext, 1) not setstimulusframe(mytext, 1) Edited 10 Years Ago by Dave
	Reply Like 61
DCole9	DCole9 posted 10 Years Ago ANSWER Post Details Share Post
Group: Forum Members Posts: 42, Visits: 220	D'oh! That was it! I had never needed to specify the element type before when specifying stimulus frames. I guess if you do insert or set stimulus frames then you need to but for the /stimulusframes tag you do not. Thanks so much!
	Reply Like 61